Anatomy And Physiologyan Integrative Approach 2nd Edition by McKinley – Test Bank

 

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Sample Test

Chapter 03

Energy, Chemical Reactions, and Cellular Respiration

 

 

True / False Questions

1.   Stored energy is described as potential energy.
TRUE

 

Bloom’s Level: 1. Remember
Learning Objective: 03.01.01 Describe the two states of energy.
Section: 03.01
Topic: Cellular respiration

 

Fill in the Blank Questions

2.   The energy of motion is known as _________ energy.
kinetic

 

Bloom’s Level: 1. Remember
Learning Objective: 03.01.01 Describe the two states of energy.
Section: 03.01
Topic: Cellular respiration

 

Multiple Choice Questions
 

3.    

The sodium level inside and outside of a resting cell is an example of the

1.   kinetic energy of sodium rushing out of a cell down its concentration gradient.
B. kinetic energy of the large difference in sodium concentration on the inside versus the outside of the cell.
C.

potential energy of a concentration gradient, because sodium is more abundant outside the cell.

1.    

potential energy of an electron transport chain, because sodium has an extra electron to donate.

1.    

conversion of potential energy to kinetic energy, because sodium can never move across the cell membrane and must move across its surface.

 

 

Bloom’s Level: 3. Apply
HAPS Objective: C08.01c With respect to the following membrane transport processes – simple diffusion, facilitated diffusion, osmosis, active transport, exocytosis, endocytosis, phagocytosis, pinocytosis, & filtration: Discuss the energy requirements and, if applicable, the sources of energy for each process.
HAPS Topic: Module C08 Mechanisms for movement of materials across cell membranes.
Learning Objective: 03.01.01 Describe the two states of energy.
Section: 03.01
Topic: Cellular respiration

 

True / False Questions

4.   The energy stored in a molecule’s chemical bonds is a form of kinetic energy.
FALSE

 

Bloom’s Level: 2. Understand
Learning Objective: 03.01.02 Describe chemical energy (one form of potential energy) and the various forms of kinetic energy.
Section: 03.01
Topic: Cellular respiration

 

Multiple Choice Questions
 

5.    

As a runner sprints down a track, her movement is an example of

1.   potential energy.
B. mechanical energy.
C. heat.
D. radiant energy.
E. chemical energy.

 

Bloom’s Level: 3. Apply
Learning Objective: 03.01.02 Describe chemical energy (one form of potential energy) and the various forms of kinetic energy.
Section: 03.01
Topic: Cellular respiration

 

Fill in the Blank Questions

6.   __________ is a monomer that is stored as the polymer glycogen within the liver and muscle.
Glucose

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.04a With respect to carbohydrates, proteins, lipids and nucleic acids: Identify the monomers and polymers.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.01.03 List the three important molecules that function primarily in chemical energy
Section: 03.01
Topic: Cellular respiration

 

Essay Questions
 

7.   Compare and contrast chemical energy and radiant energy.  Into which broad category of energy (kinetic or potential) does each fit?  What are two examples of each type of energy that relate to human physiology?

 

Chemical energy is potential energy and radiant energy is kinetic energy.  Two examples of chemical energy are triglycerides and complex carbohydrates such as glycogen.  Two examples of radiant energy are UV light (a DNA mutagen) and visible light (sensed by the visual system).

 

Bloom’s Level: 4. Analyze
Learning Objective: 03.01.02 Describe chemical energy (one form of potential energy) and the various forms of kinetic energy.
Section: 03.01
Topic: Cellular respiration

 

Multiple Choice Questions

8.    

Three molecules that are important energy storage locations in the body are

1.   DNA, tRNA, and rRNA.
B. glucose, glucagon, and glycogen.
C. ATP, glycogen, and triglyceride.
D. ADP, DNA, and mRNA.
E. glucagon, insulin, and protein.

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.04e With respect to carbohydrates, proteins, lipids and nucleic acids: Discuss physiological and structural roles in the human body.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.01.03 List the three important molecules that function primarily in chemical energy
Section: 03.01
Topic: Cellular respiration

 

True / False Questions
 

9.   The propagation of an impulse along the axon of a neuron is considered electrical energy, a form of kinetic energy.
TRUE

 

Bloom’s Level: 3. Apply
Learning Objective: 03.01.02 Describe chemical energy (one form of potential energy) and the various forms of kinetic energy.
Section: 03.01
Topic: Cellular respiration

 

Fill in the Blank Questions

10.                The form of kinetic energy that refers to the movement of electromagnetic waves is _________ energy.
radiant

 

Bloom’s Level: 2. Understand
Learning Objective: 03.01.02 Describe chemical energy (one form of potential energy) and the various forms of kinetic energy.
Section: 03.01
Topic: Cellular respiration

 

Multiple Choice Questions

11.                Which is a form of energy that is generally unavailable to do any work?
A. Heat
B.  Kinetic energy
C.  Radiant energy
D.  Sound energy
E.  Mechanical energy

 

Bloom’s Level: 2. Understand
Learning Objective: 03.01.02 Describe chemical energy (one form of potential energy) and the various forms of kinetic energy.
Section: 03.01
Topic: Cellular respiration

 

True / False Questions
 

12.                The first law of thermodynamics states that once energy is consumed, it can no longer be converted to any other form of energy.
FALSE

 

Bloom’s Level: 2. Understand
Learning Objective: 03.01.04 State the first law and second law of thermodynamics.
Section: 03.01
Topic: Cellular respiration

 

Multiple Choice Questions

13.                 

According to the second law of thermodynamics, when energy is transformed from one kind to another

1.   some of it is converted to heat.
B. some energy is destroyed.
C. new energy is created.
D. homeostasis is maintained.
E. chemical bonds must be broken.

 

Bloom’s Level: 1. Remember
Learning Objective: 03.01.04 State the first law and second law of thermodynamics.
Section: 03.01
Topic: Cellular respiration

14.                 

When we shiver on a cold day, the heat produced by muscle tissue is a demonstration of

1.   radiant potential energy.
B. the first law of thermodynamics.
C. the second law of thermodynamics.
D. the creation of energy.

 

Bloom’s Level: 3. Apply
Learning Objective: 03.01.05 Explain why energy conversion is always less than 100
Section: 03.01
Topic: Cellular respiration

 

 

 

True / False Questions

15.                When a car burns gasoline, the majority of the gasoline’s chemical energy is transformed to sound and heat.
TRUE

 

Bloom’s Level: 1. Remember
Learning Objective: 03.01.05 Explain why energy conversion is always less than 100
Section: 03.01
Topic: Cellular respiration

 

Multiple Choice Questions

16.                 

When our inner ears convert sound energy into neural impulses or our retinas convert light into neural impulses,

1.   no heat is generated, and so it is an exception to the first law of thermodynamics.
B.

it is an exception to both laws of thermodynamics, because no usable energy is lost.

1.   it is consistent with the second law of thermodynamics, but an exception to the first.
D.the conversion is consistent with both laws of thermodynamics.

 

Bloom’s Level: 3. Apply
Learning Objective: 03.01.04 State the first law and second law of thermodynamics.
Section: 03.01
Topic: Cellular respiration

 

True / False Questions
 

17.                Typically, synthesis reactions are endergonic.
TRUE

 

Bloom’s Level: 2. Understand
HAPS Objective: O02.01 Define metabolism, anabolism and catabolism.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.02.03 Describe the three classifications of chemical reactions.
Section: 03.02
Topic: Cellular respiration

 

Fill in the Blank Questions

18.                Chemical reactions that release energy are called __________ reactions.
exergonic

 

Bloom’s Level: 1. Remember
HAPS Objective: O02.01 Define metabolism, anabolism and catabolism.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.02.03 Describe the three classifications of chemical reactions.
Section: 03.02
Topic: Cellular respiration

 

Multiple Choice Questions
 

19.                 

The reaction in which water and carbon dioxide combine to form carbonic acid is

1.   irreversible, as carbonic acid rapidly causes a drop in pH.
B. reversible, and can proceed in either direction depending on the concentrations of the molecules.
C. exergonic, and is an important energy source within the body.
D. an exchange reaction in which protons are transferred between atoms.
E. a catabolic reaction in which the formation of a larger molecule can lead to an increase in cell size.

 

Bloom’s Level: 3. Apply
HAPS Objective: C03.04 Define the terms pH, acid, base, and buffer and give examples of physiological significance.
HAPS Topic: Module C03 Inorganic compounds and solutions.
Learning Objective: 03.02.03 Describe the three classifications of chemical reactions.
Section: 03.02
Topic: Cellular respiration

20.                 

The building of complex molecules from simpler ones is described as

1.   anabolism.
B. catabolism.
C. exergonic.
D. irreversible.
E. reversible.

 

Bloom’s Level: 1. Remember
HAPS Objective: O02.01 Define metabolism, anabolism and catabolism.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.02.04 Distinguish between catabolism and anabolism.
Section: 03.03
Topic: Cellular respiration

 

21.                 

When the body’s digestive system breaks down starch, a complex carbohydrate, into simpler carbohydrates, the reaction is

1.   anabolic and endergonic.
B. anabolic and exergonic.
C. catabolic and exergonic.
D. catabolic and endergonic.

 

Bloom’s Level: 3. Apply
HAPS Objective: O02.02 Provide examples of anabolic and catabolic reactions.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.02.04 Distinguish between catabolism and anabolism.
Section: 03.02
Topic: Cellular respiration

22.                Which one of the following choices includes three descriptions that are consistent with each other (that is, that describe the same type of chemical reaction)?
A. Anabolic, dehydration, endergonic
B.  Exchange, hydrolysis, endergonic
C.  Catabolic, dehydration, irreversible
D.  Metabolic, synthesis, exergonic
E.  Anabolic, catabolic, dehydration

 

Bloom’s Level: 3. Apply
HAPS Objective: O02.01 Define metabolism, anabolism and catabolism.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.02.03 Describe the three classifications of chemical reactions.
Section: 03.02
Topic: Cellular respiration

 

True / False Questions
 

23.                The exchange of a phosphate group between creatine phosphate and adenosine diphosphate is categorized as a catabolic (rather than anabolic) reaction.
FALSE

 

Bloom’s Level: 3. Apply
HAPS Objective: O02.02 Provide examples of anabolic and catabolic reactions.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.02.04 Distinguish between catabolism and anabolism.
Section: 03.02
Topic: Cellular respiration

 

Multiple Choice Questions

24.                 

The term “metabolism” refers to

1.   reactions involving the breakdown of complex molecules into simpler ones.
B. reactions involving the breakdown of complex molecules or the exchange of atoms between similarly sized reactants.
C. all the chemical reactions in the body.
D. reactions involving the synthesis of complex molecules from simpler ones.
E. digestive system reactions that are either catabolic or exchange reactions.

 

Bloom’s Level: 2. Understand
HAPS Objective: O02.01 Define metabolism, anabolism and catabolism.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.02.04 Distinguish between catabolism and anabolism.
Section: 03.02
Topic: Cellular respiration

 

25.                 

When NAD+ becomes NADH, it is being

1.   reduced and gaining chemical energy.
B. reduced and releasing chemical energy.
C. oxidized and gaining chemical energy.
D. oxidized and releasing chemical energy.

 

Bloom’s Level: 3. Apply
HAPS Objective: O02.04 Explain the roles of coenzyme A, NAD, and FAD in metabolism.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.02.05 Discuss the exchange that takes place in an oxidation-reduction reaction.
Section: 03.03
Topic: Cellular respiration

26.                 

In a chemical reaction where an electron is exchanged from one reactant to another, the structure that loses an electron is

1.   analyzed.
B. catalyzed.
C. oxidized.
D. reduced.

 

Bloom’s Level: 2. Understand
HAPS Objective: O02.05 Describe the processes of oxidation, reduction, decarboxylation, and phosphorylation.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.02.05 Discuss the exchange that takes place in an oxidation-reduction reaction.
Section: 03.02
Topic: Cellular respiration

 

27.                 

In a redox reaction, when one reactant is oxidized, the other

1.   is reduced.
B. is also oxidized.
C. is hydrolyzed into a smaller molecule.
D. releases chemical energy in the form of ATP.
E. becomes a larger, more complex molecule.

 

Bloom’s Level: 2. Understand
HAPS Objective: O02.05 Describe the processes of oxidation, reduction, decarboxylation, and phosphorylation.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.02.05 Discuss the exchange that takes place in an oxidation-reduction reaction.
Section: 03.02
Topic: Cellular respiration

28.                 

Generally, a cell stores enough ATP to meet the energy requirements of a few

1.   seconds.
B. minutes.
C. hours.
D. days.

 

Bloom’s Level: 1. Remember
HAPS Objective: C05.01 Describe the generalized reversible reaction for release of energy from ATP and explain the role of ATP in the cell.
HAPS Topic: Module C05 Energy transfer using ATP.
Learning Objective: 03.02.06 Explain ATP cycling.
Section: 03.02
Topic: Cellular respiration

 

29.                 

ATP formation

1.   is endergonic and liberates energy for cellular processes that require energy.
B. is endergonic and requires the presence of fuel molecules such as glucose.
C. is exergonic and liberates energy for cellular processes that require energy.
D. is exergonic and requires the presence of fuel molecules such as glucose.

 

Bloom’s Level: 2. Understand
HAPS Objective: C11.02 With respect to glycolysis, the Krebs (citric acid or TCA) cycle, and the electron transport chain: compare and contrast energy input, efficiency of energy production, oxygen use, by-products and cellular location.
HAPS Topic: Module C11 Cellular respiration.
Learning Objective: 03.02.06 Explain ATP cycling.
Section: 03.02
Topic: Energy transfer using ATP

30.                 

In a lab setting, heating a vessel full of reactants will generally

1.   increase the kinetic energy of the molecules and increase the reaction rate.
B. raise the activation energy and catalyze the reaction.
C. lower the activation energy and the kinetic energy of the reactants.
D. convert products to reactants by increasing the energy requirements.
E. lower the reaction rate due to the change in structure of the reactants.

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.02.07 Define chemical reaction rate.
Section: 03.02
Topic: Cellular respiration

 

Fill in the Blank Questions
 

31.                In order for a reaction to occur, energy is needed to break the bonds that already exist in the reactant molecules; that energy is called the _________ energy.
activation

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.02.08 Explain activation energy.
Section: 03.02
Topic: Cellular respiration

 

Short Answer Questions

32.                Explain the relationship between activation energy and reaction rate.  For example, how would an increase in activation energy affect reaction rate?  How do biological systems differ from lab settings when considering these chemical variables?

 

Bloom’s Level: 4. Analyze
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.02.08 Explain activation energy.
Section: 03.02
Topic: Cellular respiration

 

Multiple Choice Questions
 

33.                 

The term “activation energy” refers to the amount of energy

1.    

released by an exergonic reaction.

1.    

released by an endergonic reaction.

1.    

released by a catabolic reaction.

1.    

required to initiate any chemical reaction.

1.    

required to initiate only catabolic reactions.

 

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.02.08 Explain activation energy.
Section: 03.02
Topic: Cellular respiration

 

True / False Questions
 

34.                A reaction with a very high activation energy should have a very high reaction rate.
FALSE

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.02.08 Explain activation energy.
Section: 03.02
Topic: Cellular respiration

 

Multiple Choice Questions

35.                 

The presence of an enzyme within a chemical system

1.   increases activation energy.
B. decreases activation energy.
C. increases potential energy.
D. does not affect either activation energy or potential energy.

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.01 Describe the general function of enzymes.
Section: 03.03
Topic: Cellular respiration

 

True / False Questions

36.                Enzymes are biological catalysts that are crucial for normal human metabolism.
TRUE

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.01 Describe the general function of enzymes.
Section: 03.03
Topic: Cellular respiration

 

37.                Exergonic reactions do not require activation energy.
FALSE

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.01 Describe the general function of enzymes.
Section: 03.03
Topic: Cellular respiration

38.                In the absence of the enzyme carbonic anhydrase, the combination of water and carbon dioxide to form carbonic acid does not occur.
FALSE

 

Bloom’s Level: 3. Apply
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.01 Describe the general function of enzymes.
Section: 03.03
Topic: Cellular respiration

 

Multiple Choice Questions
 

39.                 

Structurally, enzymes are generally

1.   globular proteins.
B. fibrous proteins.
C. spherical carbohydrates.
D. elongated carbohydrates.
E.

four-ring steroids.

 

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.05 Describe the four levels of protein structure and discuss the importance of protein shape for protein function.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.02 Describe the key structural components of enzymes.
Section: 03.03
Topic: Cellular respiration

40.                 

The region of an enzyme into which the substrate fits is a

1.    

one-size-fits-all active site.

1.   highly specific active site.
C.highly specific antibody.
D.

one-size-fits-all antibody.

 

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.02 Describe the key structural components of enzymes.
Section: 03.03
Topic: Cellular respiration

 

41.                 

The enzyme-substrate complex is

1.   another name for the active site.
B. the reactants whose chemical reaction the enzyme catalyzes.
C. the chemical structure formed when the substrate binds to the active site.
D. a pocket on the substrate that the enzyme recognizes.

 

Bloom’s Level: 4. Analyze
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.02 Describe the key structural components of enzymes.
Section: 03.03
Topic: Cellular respiration

42.                 

Pancreatic amylase serves its function when it is located in the

1.   mouth.
B. blood.
C. liver.
D. stomach.
E. small intestine.

 

Bloom’s Level: 3. Apply
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.03 Identify places in the body where enzymes may be found.
Section: 03.03
Topic: Cellular respiration

 

43.                 

Lactose intolerance is caused by the lack of the enzyme lactase, which is normally found in the

1.   lumen of the stomach.
B. inside of cells of the liver and gall bladder.
C. membranes of cells in the small intestine.
D. inside of cells in the large intestine.
E.

endothelium of capillaries in the large intestine.

 

 

Bloom’s Level: 3. Apply
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.03 Identify places in the body where enzymes may be found.
Section: 03.03
Topic: Cellular respiration

 

44.                 

The enzyme DNA polymerase is synthesized

1.    

at a ribosome, and it remains within the cell.

1.    

at the rough endoplasmic reticulum, and it is secreted from the cell.

1.    

at the Golgi apparatus, and it is embedded in the cell membrane.

1.    

in the nucleus, and it is converted to RNA for export outside the cell.

 

 

Bloom’s Level: 3. Apply
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.03 Identify places in the body where enzymes may be found.
Section: 03.03
Topic: Cellular respiration

 

45.                Which answer lists the steps of enzyme action in correct order?
A. Formation of enzyme-substrate complex, induced fit, formation or breakage of chemical bonds, release of product
B.  Induced fit, formation of enzyme-substrate complex, formation or breakage of chemical bonds, release of product
C.  Formation or breakage of chemical bonds, induced fit, formation of enzyme-substrate complex, release of substrate
D.  Induced fit, formation or breakage of chemical bonds, formation of enzyme-substrate complex, release of product

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.04 Explain the steps by which an enzyme catalyzes a reaction.
Section: 03.03
Topic: Cellular respiration

 

Fill in the Blank Questions

46.                 

When an enzyme’s conformational change results in the enzyme hugging the substrate in its active site, the action is referred to as the __________ model of enzyme function.

induced-fit  or  
induced fit

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.04 Explain the steps by which an enzyme catalyzes a reaction.
Section: 03.03
Topic: Cellular respiration

 

Multiple Choice Questions
 

47.                 

When an enzyme catalyzing a catabolic reaction changes conformation to an induced fit with the substrate,

1.   it strengthens the chemical bonds in the enzyme so that it remains perpetually active.
B. it stresses chemical bonds in the substrate, making it easier to break them.
C. it strengthens chemical bonds in the substrate so that cofactors can act on it.
D.

it stresses chemical bonds in the enzyme so that the enzyme breaks into two catalytic subunits.

 

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.04 Explain the steps by which an enzyme catalyzes a reaction.
Section: 03.03
Topic: Cellular respiration

48.                 

In the final step of enzymatic catalysis,

1.   the substrate is released and the enzyme is inactivated.
B. the product is completed and the enzyme is inactivated.
C. the products are released and the enzyme is free to bind other substrates.
D. the enzyme and substrate form chemical bonds with each other resulting in a new product.
E. equilibrium is obtained so that the enzyme does not catalyze further reactions.

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.04 Explain the steps by which an enzyme catalyzes a reaction.
Section: 03.03
Topic: Cellular respiration

 

True / False Questions
 

49.                Cofactors are generally proteins.
FALSE

 

Bloom’s Level: 1. Remember
HAPS Objective: O02.03 Compare and contrast the roles of enzymes and coenzymes in metabolism.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.03.05 Describe cofactors and their role in reactions.
Section: 03.03
Topic: Cellular respiration

 

Fill in the Blank Questions

50.                Organic cofactors are referred to as _________.
coenzymes

 

Bloom’s Level: 1. Remember
HAPS Objective: O02.03 Compare and contrast the roles of enzymes and coenzymes in metabolism.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.03.05 Describe cofactors and their role in reactions.
Section: 03.03
Topic: Cellular respiration

 

Multiple Choice Questions
 

51.                 

In performing its enzymatic function, carbonic anhydrase

1.   requires the inorganic coenzyme zinc.
B. requires the organic coenzyme carbon dioxide.
C.

is facilitated by the inorganic coenzyme NAD+.

1.   is facilitated by the organic coenzyme zinc.
E.requires the inorganic coenzyme NADPH.

 

Bloom’s Level: 4. Analyze
HAPS Objective: O02.03 Compare and contrast the roles of enzymes and coenzymes in metabolism.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.03.05 Describe cofactors and their role in reactions.
Section: 03.03
Topic: Cellular respiration

52.                Which enzyme class splits a chemical bond in the absence of water?
A. Ligase
B.  Oxidoreductase
C.  Lyase
D.  Hydrolase
E.  Dehydrogenase

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.06 Identify the six major classes of enzymes and the general functions of enzymes in each class.
Section: 03.03
Topic: Cellular respiration

 

53.                Which enzyme class transfers electrons from one substance to another?
A. Oxidoreductase
B.  Transferase
C.  Isomerase
D.  Ligase
E.  Electin

 

Bloom’s Level: 1. Remember
Learning Objective: 03.03.06 Identify the six major classes of enzymes and the general functions of enzymes in each class.
Section: 03.03
Topic: Cellular respiration

54.                 

An enzyme that is described as a protein kinase is a

1.   hydrolase that removes an amino acid from a protein.
B. transferase that transfers a phosphate group to a protein substrate.
C. ligase that adds an amino acid to a protein.
D. isomerase that changes one protein into another.
E. protease that transfers electrons from one protein to another.

 

Bloom’s Level: 3. Apply
Learning Objective: 03.03.06 Identify the six major classes of enzymes and the general functions of enzymes in each class.
Section: 03.03
Topic: Energy transfer using ATP

 

True / False Questions

55.                Lactase is an enzyme that digests lactose.
TRUE

 

Bloom’s Level: 1. Remember
Learning Objective: 03.03.07 Describe the naming conventions for enzymes.
Section: 03.03
Topic: Cellular respiration

 

Short Answer Questions
 

56.                Briefly describe how enzymes are named. What is generally used for the root of the name, and what is generally used as the suffix?  Provide one example.

The root is usually the substrate (or product) and the suffix is generally “-ase”.  An example is lactase, which digests lactose.

 

Bloom’s Level: 2. Understand
Learning Objective: 03.03.07 Describe the naming conventions for enzymes.
Section: 03.03
Topic: Cellular respiration

 

True / False Questions

57.                An isomerase bonds two similar molecules together to form a larger one.
FALSE

 

Bloom’s Level: 2. Understand
Learning Objective: 03.03.06 Identify the six major classes of enzymes and the general functions of enzymes in each class.
Section: 03.03
Topic: Cellular respiration

58.                Both pepsin and trypsin are proteins that digest proteins.
TRUE

 

Bloom’s Level: 3. Apply
Learning Objective: 03.03.07 Describe the naming conventions for enzymes.
Section: 03.03
Topic: Cellular respiration

 

Multiple Choice Questions
 

59.                Which statement accurately describes the effects of substrate and enzyme concentrations on reaction rate?
A. An increase in either substrate or enzyme concentration will increase the reaction rate.
B.  An increase in either substrate or enzyme concentration will decrease the reaction rate.
C.  An increase in substrate concentration increases the reaction rate, but enzyme concentration has no effect.
D.  A decrease in substrate concentration or an increase in enzyme concentration increases the reaction rate.
E.  An increase in substrate concentration or a decrease in enzyme concentration will increase the reaction rate.

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.08 Define how enzyme and substrate concentration affect reaction rates.
Section: 03.03
Topic: Cellular respiration

60.                 

Saturation occurs when

1.   there is so much enzyme present that the reaction rate decreases if more is added.
B. all enzymes are busy and further increases in substrate concentration will not increase reaction rate.
C. enzymes become fatigued and can no longer catalyze changes in the substrate.
D. intramolecular interactions are disrupted in the enzyme, decreasing its efficiency and decreasing reaction rate.
E. the substrate is denatured and the enzyme cannot catalyze any changes in its structure.

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.08 Define how enzyme and substrate concentration affect reaction rates.
Section: 03.03
Topic: Cellular respiration

 

True / False Questions
 

61.                Generally, a decrease in substrate concentration leads to an increase in reaction rate.
FALSE

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.08 Define how enzyme and substrate concentration affect reaction rates.
Section: 03.03
Topic: Cellular respiration

62.                Enzyme saturation occurs when substrate levels are so high that all enzyme molecules are actively engaged in the chemical reaction, and so further increases in substrate concentration do not increase reaction rate.
TRUE

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.08 Define how enzyme and substrate concentration affect reaction rates.
Section: 03.03
Topic: Cellular respiration

 

Multiple Choice Questions
 

63.                 

At temperatures above 40°C (104°F) in the human body,

1.    

enzymatic reactions with substrates are more quickly catalyzed.

1.   enzymes denature and reaction rates decrease.
C.protein flexibility is optimum and reaction rates increase.
D. protein shape is rigid and reaction rates are constant.

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.09 Explain the effect of temperature on enzymes.
Section: 03.03
Topic: Cellular respiration

64.                 

A fever of 101°F causes most enzymes in the human body

1.   to denature.
B. to become more rigid.
C. to be more flexible and efficient.
D. to saturate.

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.09 Explain the effect of temperature on enzymes.
Section: 03.03
Topic: Cellular respiration

 

Fill in the Blank Questions
 

65.                 

Extremely high temperatures break intramolecular interactions and _________ an enzyme, resulting in a loss of its function.

denature  or  
denatures

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.09 Explain the effect of temperature on enzymes.
Section: 03.03
Topic: Cellular respiration

 

True / False Questions

66.                Cold temperatures (below 36°C) denature proteins, which is why biochemistry labs never freeze enzymes.
FALSE

 

Bloom’s Level: 3. Apply
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.09 Explain the effect of temperature on enzymes.
Section: 03.03
Topic: Cellular respiration

 

Multiple Choice Questions
 

67.                 

The optimal pH range for most human enzymes is

1.    

1-2.

1.    

4-6.

1.    

6-8.

1.    

8-10.

1.    

13-14.

 

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.10 Describe how pH changes affect enzymes.
Section: 03.03
Topic: Cellular respiration

 

68.                 

The optimal pH range for the stomach enzyme pepsin is

1.    

2-4.

1.    

6-8.

1.    

7.3-7.4.

1.    

10-12.

1.    

12.0-13.5.

 

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.10 Describe how pH changes affect enzymes.
Section: 03.03
Topic: Cellular respiration

 

True / False Questions
 

69.                The less acidic (more basic) the environment is, the more efficient an enzyme will be.
FALSE

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.10 Describe how pH changes affect enzymes.
Section: 03.03
Topic: Cellular respiration

70.                 

A large decrease in pH results in increased H+ binding to an enzyme, which can disrupt electrostatic interactions within the molecule.

TRUE

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.10 Describe how pH changes affect enzymes.
Section: 03.03
Topic: Cellular respiration

 

Fill in the Blank Questions

71.                A substance that binds to the active site of an enzyme and turns it off is called a _________ inhibitor.
competitive

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.11 Describe how competitive and noncompetitive inhibitors control enzyme action.
Section: 03.03
Topic: Cellular respiration

 

Multiple Choice Questions
 

72.                 

Noncompetitive inhibition of an enzyme occurs when the inhibitor binds to the

1.   allosteric site, and its effectiveness is not influenced by substrate concentration.
B. allosteric site, and its effectiveness depends on substrate concentration.
C. active site, and its effectiveness is not influenced by substrate concentration.
D. active site, and its effectiveness depends on substrate concentration.
E. substrate, and its effectiveness depends on product concentration.

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.11 Describe how competitive and noncompetitive inhibitors control enzyme action.
Section: 03.03
Topic: Cellular respiration

 

True / False Questions

73.                Allosteric inhibitors are also called noncompetitive inhibitors.
TRUE

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.11 Describe how competitive and noncompetitive inhibitors control enzyme action.
Section: 03.03
Topic: Cellular respiration

74.                When multiple enzymes are organized in a metabolic pathway, each enzyme catalyzes one reaction and then releases the product.
TRUE

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.12 Distinguish between a metabolic pathway and a multienzyme complex.
Section: 03.03
Topic: Cellular respiration

 

 

 

 

Multiple Choice Questions

75.                 

A group of enzymes that are physically attached to one another is referred to as a(n)

1.   allosteric pathway.
B. metabolic pathway.
C. multienzyme complex.
D. phosphate complex.

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.12 Distinguish between a metabolic pathway and a multienzyme complex.
Section: 03.03
Topic: Cellular respiration

76.                Which enzyme system allows for regulation at a single site and also diminishes the chance that a needed substrate will diffuse away from a catalyst?
A. Metabolic pathway
B.  Multienzyme complex

 

Bloom’s Level: 4. Analyze
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.12 Distinguish between a metabolic pathway and a multienzyme complex.
Section: 03.03
Topic: Cellular respiration

 

77.                 

To prevent depletion of a substrate, the product of a metabolic pathway will

1.   turn off an enzyme early in the pathway.
B. catalyze its own production.
C. increase enzyme activity through positive feedback.
D. occupy the active site of an enzyme early in the pathway.

 

Bloom’s Level: 3. Apply
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.13 Explain the role of negative feedback in enzyme regulation.
Section: 03.03
Topic: Cellular respiration

 

True / False Questions

78.                 

In the regulation of enzymes, negative feedback ensures that a lot of product can be made from only a little bit of substrate.

FALSE

 

Bloom’s Level: 2. Understand
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.13 Explain the role of negative feedback in enzyme regulation.
Section: 03.03
Topic: Cellular respiration

 

Fill in the Blank Questions
 

79.                Enzymes that remove phosphate groups from their substrates are called __________.
phosphatasesor  
phosphatase

 

Bloom’s Level: 1. Remember
Learning Objective: 03.03.14 Identify and explain the processes involving phosphate that commonly are used to regulate enzymes.
Section: 03.03
Topic: Energy transfer using ATP

 

Multiple Choice Questions

80.                 

Enzyme regulation by negative feedback involves

1.   allosteric inhibition of an enzyme by a product of its metabolic pathway.
B. allosteric facilitation of an enzyme by a substrate of its metabolic pathway.
C. allosteric modification of a substrate by an enzyme of an alternate metabolic pathway.
D. occupation of the active site of an enzyme so that it catalyzes less efficiently.
E. enhancement of the active site by a negatively charged substrate.

 

Bloom’s Level: 3. Apply
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.13 Explain the role of negative feedback in enzyme regulation.
Section: 03.03
Topic: Cellular respiration

 

True / False Questions

81.                A protein kinase is an enzyme that adds a phosphate to its substrate.
TRUE

 

Bloom’s Level: 1. Remember
Learning Objective: 03.03.14 Identify and explain the processes involving phosphate that commonly are used to regulate enzymes.
Section: 03.03
Topic: Energy transfer using ATP

 

 

 

Multiple Choice Questions

82.                 

Phosphorylation is carried out by a

1.   kinase, and it results in the negative feedback inhibition of an enzyme.
B. kinase, and it may activate some enzymes and inhibit others.
C. phosphatase, and it results in the negative feedback inhibition of an enzyme.
D. phosphatase, and it may activate some enzymes and inhibit others.

 

Bloom’s Level: 1. Remember
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.14 Identify and explain the processes involving phosphate that commonly are used to regulate enzymes.
Section: 03.03
Topic: Energy transfer using ATP

 

Essay Questions

83.                Imagine that you discovered an enzyme in the human stomach that turned the substrate “ABC” into the product “XYZ”.  Name this enzyme (using the standard convention) and describe its chemical characteristics.  Under what conditions would it be an effective catalyst?  How might its activity be regulated?

The enzyme “ABCase” would work best at or near human body temperature and at the acidic pH of the stomach. The enzyme is a globular protein that acts as a catalyst. Its activity might be regulated in a variety of fashions described in section 3.3 of the book.

 

Bloom’s Level: 5. Evaluate
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Objective: 03.03.14 Identify and explain the processes involving phosphate that commonly are used to regulate enzymes.
Section: 03.03
Topic: Cellular respiration

 

Multiple Choice Questions
 

84.                When one glucose molecule is fully oxidized, how many molecules of CO2 result?
A. 1
B.  2
C.  3
D.  6

 

Bloom’s Level: 1. Remember
HAPS Objective: C11.02 With respect to glycolysis, the Krebs (citric acid or TCA) cycle, and the electron transport chain: compare and contrast energy input, efficiency of energy production, oxygen use, by-products and cellular location.
HAPS Topic: Module C11 Cellular respiration.
Learning Objective: 03.04.01 Write the overall formula for glucose oxidation.
Section: 03.04
Topic: Cellular respiration

 

Fill in the Blank Questions

85.                During cellular respiration, when glucose is fully disassembled to carbon dioxide and water, the other reactant (with glucose) in the chemical equation is ___________.
oxygenor  
O2

 

Bloom’s Level: 2. Understand
HAPS Objective: C11.02 With respect to glycolysis, the Krebs (citric acid or TCA) cycle, and the electron transport chain: compare and contrast energy input, efficiency of energy production, oxygen use, by-products and cellular location.
HAPS Topic: Module C11 Cellular respiration.
Learning Objective: 03.04.01 Write the overall formula for glucose oxidation.
Section: 03.04
Topic: Cellular respiration

 

True / False Questions

86.                Glucose oxidation is exergonic.
TRUE

 

Bloom’s Level: 2. Understand
HAPS Objective: C11.02 With respect to glycolysis, the Krebs (citric acid or TCA) cycle, and the electron transport chain: compare and contrast energy input, efficiency of energy production, oxygen use, by-products and cellular location.
HAPS Topic: Module C11 Cellular respiration.
Learning Objective: 03.04.01 Write the overall formula for glucose oxidation.
Section: 03.04
Topic: Cellular respiration

 

87.                In substrate-level phosphorylation, energy is first released to coenzymes and then transferred to form ATP.
FALSE

 

Bloom’s Level: 1. Remember
HAPS Objective: C11.02 With respect to glycolysis, the Krebs (citric acid or TCA) cycle, and the electron transport chain: compare and contrast energy input, efficiency of energy production, oxygen use, by-products and cellular location.
HAPS Topic: Module C11 Cellular respiration.
Learning Objective: 03.04.02 Name the two pathways that generate ATP.
Section: 03.04
Topic: Cellular respiration

 

Fill in the Blank Questions

88.                The indirect method of ATP production involves coenzymes such as FAD and is referred to as _________ phosphorylation.
oxidative

 

Bloom’s Level: 1. Remember
HAPS Objective: C11.02 With respect to glycolysis, the Krebs (citric acid or TCA) cycle, and the electron transport chain: compare and contrast energy input, efficiency of energy production, oxygen use, by-products and cellular location.
HAPS Topic: Module C11 Cellular respiration.
Learning Objective: 03.04.02 Name the two pathways that generate ATP.
Section: 03.04
Topic: Cellular respiration

 

Multiple Choice Questions
 

89.                 

The more common way that ATP is produced in cells is

1.   the indirect pathway known as oxidative phosphorylation.
B. the indirect pathway known as substrate-level phosphorylation.
C. the direct pathway known as oxidative phosphorylation.
D. the direct pathway known as substrate-level phosphorylation.

 

Bloom’s Level: 2. Understand
HAPS Objective: C11.02 With respect to glycolysis, the Krebs (citric acid or TCA) cycle, and the electron transport chain: compare and contrast energy input, efficiency of energy production, oxygen use, by-products and cellular location.
HAPS Topic: Module C11 Cellular respiration.
Learning Objective: 03.04.02 Name the two pathways that generate ATP.
Section: 03.04
Topic: Cellular respiration

90.                Which of the following choices lists the order of stages of cellular respiration in proper order?
A. Glycolysis, intermediate stage, citric acid cycle, and the electron transport system
B.  Citric acid cycle, glycolysis, intermediate stage, and the electron transport system
C.  Glycolysis, citric acid cycle, intermediate stage, and the electron transport system
D.  Glycolysis, intermediate stage, electron transport system, and the citric acid cycle
E.  Citric acid cycle, electron transport chain, intermediate stage, and glycolysis

 

Bloom’s Level: 1. Remember
HAPS Objective: C11.02 With respect to glycolysis, the Krebs (citric acid or TCA) cycle, and the electron transport chain: compare and contrast energy input, efficiency of energy production, oxygen use, by-products and cellular location.
HAPS Topic: Module C11 Cellular respiration.
Learning Objective: 03.04.03 List the four stages of glucose oxidation and where each stage occurs within a cell.
Section: 03.04
Topic: Cellular respiration

 

91.                 

The first stage of cellular respiration is

1.   electron transport, and it occurs in the cytosol.
B. electron transport, and it occurs in the mitochondria.
C. glycolysis, and it occurs in the cytosol.
D. glycolysis, and it occurs in the mitochondria.
E. the citric acid cycle, and it occurs at the mitochondria.

 

Bloom’s Level: 1. Remember
HAPS Objective: C11.02 With respect to glycolysis, the Krebs (citric acid or TCA) cycle, and the electron transport chain: compare and contrast energy input, efficiency of energy production, oxygen use, by-products and cellular location.
HAPS Topic: Module C11 Cellular respiration.
Learning Objective: 03.04.03 List the four stages of glucose oxidation and where each stage occurs within a cell.
Section: 03.04
Topic: Cellular respiration

 

True / False Questions

92.                 

Glycolysis requires oxygen.

FALSE

 

Bloom’s Level: 1. Remember
HAPS Objective: C11.02 With respect to glycolysis, the Krebs (citric acid or TCA) cycle, and the electron transport chain: compare and contrast energy input, efficiency of energy production, oxygen use, by-products and cellular location.
HAPS Topic: Module C11 Cellular respiration.
Learning Objective: 03.04.03 List the four stages of glucose oxidation and where each stage occurs within a cell.
Section: 03.04
Topic: Cellular respiration

 

Multiple Choice Questions
 

93.                 

The intermediate stage of cellular respiration

1.    

produces ATP and occurs in the cytosol.

1.    

produces carbon dioxide and occurs in the mitochondria.

1.    

requires Coenzyme A and occurs in the cytosol.

1.    

produces pyruvate and occurs in the mitochondria.

 

 

Bloom’s Level: 2. Understand
HAPS Objective: C11.02 With respect to glycolysis, the Krebs (citric acid or TCA) cycle, and the electron transport chain: compare and contrast energy input, efficiency of energy production, oxygen use, by-products and cellular location.
HAPS Topic: Module C11 Cellular respiration.
Learning Objective: 03.04.03 List the four stages of glucose oxidation and where each stage occurs within a cell.
Section: 03.04
Topic: Cellular respiration

 

94.                 

Hexokinase is an enzyme involved in cellular respiration and its substrate is glucose.  Considering this information, hexokinase must be located

1.   in the lumen of the stomach.
B. in the lumen of the small intestine.
C. inside the mitochondria of cells.
D. in the cytosol of cells.

 

Bloom’s Level: 4. Analyze
HAPS Objective: C11.02 With respect to glycolysis, the Krebs (citric acid or TCA) cycle, and the electron transport chain: compare and contrast energy input, efficiency of energy production, oxygen use, by-products and cellular location.
HAPS Topic: Module C11 Cellular respiration.
Learning Objective: 03.04.03 List the four stages of glucose oxidation and where each stage occurs within a cell.
Section: 03.04
Topic: Cellular respiration

95.                 

In the process of glycolysis

1.   one enzyme converts glucose into NADH.
B. two enzymes are involved in breaking glucose down to ten pyruvate molecules.
C. ten enzymes are involved in breaking glucose down to two pyruvate molecules.
D. twelve enzymes split glucose into thirteen smaller molecules.
E. six enzymes use two ATP to split glucose in half.

 

Bloom’s Level: 2. Understand
HAPS Objective: O03.01b With respect to carbohydrate metabolism: Describe the processes of glycolysis, formation of acetyl CoA, the Kreb’s (TCA) cycle, and the electron transport chain, including the substrates and products of each, their locations within the cell and the energy yield of each process.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.04 Summarize the metabolic pathway of glycolysis, including the molecules formed in the transfer of energy from glucose.
Section: 03.04
Topic: Cellular respiration

 

True / False Questions
 

96.                Glycolysis results in the breakdown of a glucose molecule and the net production of four ATP molecules.
FALSE

 

Bloom’s Level: 1. Remember
HAPS Objective: O03.01b With respect to carbohydrate metabolism: Describe the processes of glycolysis, formation of acetyl CoA, the Kreb’s (TCA) cycle, and the electron transport chain, including the substrates and products of each, their locations within the cell and the energy yield of each process.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.04 Summarize the metabolic pathway of glycolysis, including the molecules formed in the transfer of energy from glucose.
Section: 03.04
Topic: Cellular respiration

 

Multiple Choice Questions

97.                 

During the early steps of glycolysis, glucose is converted to glucose 6-P, and then glucose 6-P is converted directly to

1.   aldolase.
B. fructose 6-P.
C. isomerase.
D. pyruvate.
E. NADH.

 

Bloom’s Level: 1. Remember
HAPS Objective: O03.01b With respect to carbohydrate metabolism: Describe the processes of glycolysis, formation of acetyl CoA, the Kreb’s (TCA) cycle, and the electron transport chain, including the substrates and products of each, their locations within the cell and the energy yield of each process.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.04 Summarize the metabolic pathway of glycolysis, including the molecules formed in the transfer of energy from glucose.
Section: 03.04
Topic: Cellular respiration

 

True / False Questions
 

98.                The binding of ATP to phosphofructokinase inhibits the glycolytic pathway.
TRUE

 

Bloom’s Level: 2. Understand
HAPS Objective: O03.01d With respect to carbohydrate metabolism: Describe the anaerobic process for generating ATP, including conditions under which it occurs and its products and their functions.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.04 Summarize the metabolic pathway of glycolysis, including the molecules formed in the transfer of energy from glucose.
Section: 03.04
Topic: Cellular respiration

 

Fill in the Blank Questions

99.                If insufficient oxygen is available for the anaerobic breakdown of pyruvate, it is converted to _________.
lactateor  
lactic acid

 

Bloom’s Level: 1. Remember
HAPS Objective: C11.02 With respect to glycolysis, the Krebs (citric acid or TCA) cycle, and the electron transport chain: compare and contrast energy input, efficiency of energy production, oxygen use, by-products and cellular location.
HAPS Topic: Module C11 Cellular respiration.
Learning Objective: 03.04.04 Summarize the metabolic pathway of glycolysis, including the molecules formed in the transfer of energy from glucose.
Section: 03.04
Topic: Cellular respiration

 

Multiple Choice Questions
 

100.              

Pyruvate dehydrogenase is located in the

1.   cytosol.
B. cell membrane.
C. outer compartment of the mitochondrion.
D. middle of the crista.
E. matrix of the mitochondrion.

 

Bloom’s Level: 3. Apply
HAPS Objective: O03.01b With respect to carbohydrate metabolism: Describe the processes of glycolysis, formation of acetyl CoA, the Kreb’s (TCA) cycle, and the electron transport chain, including the substrates and products of each, their locations within the cell and the energy yield of each process.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.05 Explain the enzymatic reaction involving pyruvate dehydrogenase in the intermediate stage.
Section: 03.04
Topic: Cellular respiration

101.             Which stage of cellular respiration is catalyzed by pyruvate dehydrogenase?
A. Electron transport system
B.  Intermediate stage
C.  Citric acid cycle
D.  Glycolysis
E.  Fermentation to lactate

 

Bloom’s Level: 1. Remember
HAPS Objective: O03.01b With respect to carbohydrate metabolism: Describe the processes of glycolysis, formation of acetyl CoA, the Kreb’s (TCA) cycle, and the electron transport chain, including the substrates and products of each, their locations within the cell and the energy yield of each process.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.05 Explain the enzymatic reaction involving pyruvate dehydrogenase in the intermediate stage.
Section: 03.04
Topic: Cellular respiration

 

True / False Questions
 

102.             Pyruvate dehydrogenase is a multienzyme complex that brings together a molecule of pyruvate and a molecule of coenzyme A.
TRUE

 

Bloom’s Level: 1. Remember
HAPS Objective: O03.01b With respect to carbohydrate metabolism: Describe the processes of glycolysis, formation of acetyl CoA, the Kreb’s (TCA) cycle, and the electron transport chain, including the substrates and products of each, their locations within the cell and the energy yield of each process.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.05 Explain the enzymatic reaction involving pyruvate dehydrogenase in the intermediate stage.
Section: 03.04
Topic: Cellular respiration

 

Multiple Choice Questions

103.              

During cellular respiration, decarboxylation occurs when

1.   a carbon atom is removed from glucose.
B. a carbon dioxide molecule is removed from the cytosol.
C. a carboxyl group is released from pyruvate.
D.

a carbon atom is removed from and an oxygen atom is added to fructose.

1.    

all carbon and oxygen atoms are released from a high-energy molecule.

 

 

Bloom’s Level: 1. Remember
HAPS Objective: O03.01b With respect to carbohydrate metabolism: Describe the processes of glycolysis, formation of acetyl CoA, the Kreb’s (TCA) cycle, and the electron transport chain, including the substrates and products of each, their locations within the cell and the energy yield of each process.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.06 Define decarboxylation.
Section: 03.04
Topic: Cellular respiration

 

True / False Questions
 

104.             Decarboxylation occurs during the intermediate stage of aerobic cellular respiration.
TRUE

 

Bloom’s Level: 1. Remember
HAPS Objective: O03.01b With respect to carbohydrate metabolism: Describe the processes of glycolysis, formation of acetyl CoA, the Kreb’s (TCA) cycle, and the electron transport chain, including the substrates and products of each, their locations within the cell and the energy yield of each process.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.06 Define decarboxylation.
Section: 03.04
Topic: Cellular respiration

105.             During decarboxylation, NAD+ is formed from NADH.
FALSE

 

Bloom’s Level: 2. Understand
HAPS Objective: O02.04 Explain the roles of coenzyme A, NAD, and FAD in metabolism.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.04.06 Define decarboxylation.
Section: 03.04
Topic: Cellular respiration

 

Multiple Choice Questions

106.              

During the citric acid cycle, an acetyl CoA molecule produced in the intermediate stage combines with a molecule of

1.   oxaloacetic acid.
B. pyruvate.
C. citrate.
D. succinate.

 

Bloom’s Level: 1. Remember
HAPS Objective: O03.01b With respect to carbohydrate metabolism: Describe the processes of glycolysis, formation of acetyl CoA, the Kreb’s (TCA) cycle, and the electron transport chain, including the substrates and products of each, their locations within the cell and the energy yield of each process.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.07 Summarize the metabolic pathway of the citric acid cycle.
Section: 03.04
Topic: Cellular respiration

 

107.              

The citric acid cycle involves

1.   a multienzyme complex within the cytosol.
B. several enzymes within the matrix of the mitochondrion.
C. a multienzyme complex within the outer compartment of the mitochondrion.
D. several enzymes within the cytosol and the outer membrane of the mitochondrion.

 

Bloom’s Level: 1. Remember
HAPS Objective: O03.01b With respect to carbohydrate metabolism: Describe the processes of glycolysis, formation of acetyl CoA, the Kreb’s (TCA) cycle, and the electron transport chain, including the substrates and products of each, their locations within the cell and the energy yield of each process.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.07 Summarize the metabolic pathway of the citric acid cycle.
Section: 03.04
Topic: Cellular respiration

108.              

One turn of the citric acid cycle results in the formation of

2.   1 ATP, 3 NADH, and 1 FADH2.
B. 2 pyruvates and 2 ATP.
C. 2 ATP, 2 NADH
+, and 3 FADH.
D. 2 citrates, 4 ATP, and 3 FADH
2.

 

Bloom’s Level: 1. Remember
HAPS Objective: O03.01b With respect to carbohydrate metabolism: Describe the processes of glycolysis, formation of acetyl CoA, the Kreb’s (TCA) cycle, and the electron transport chain, including the substrates and products of each, their locations within the cell and the energy yield of each process.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.07 Summarize the metabolic pathway of the citric acid cycle.
Section: 03.04
Topic: Cellular respiration

 

True / False Questions
 

109.             Oxidative phosphorylation within the electron transport system accounts for a little less than half of the ATP synthesized from the breakdown of glucose.
FALSE

 

Bloom’s Level: 1. Remember
HAPS Objective: O03.01b With respect to carbohydrate metabolism: Describe the processes of glycolysis, formation of acetyl CoA, the Kreb’s (TCA) cycle, and the electron transport chain, including the substrates and products of each, their locations within the cell and the energy yield of each process.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.08 Describe the importance of NADH and FADH2 in energy transfer
Section: 03.04
Topic: Cellular respiration

 

Multiple Choice Questions

110.              

The coenzymes that will provide the electrons needed for the electron transport system are

2.   NADH and FADH2.
B. NAD and FAD
+.
C. acetyl CoA and citrate.
D. pyruvate and NADH.
E. FAD and decarboxylase.

 

Bloom’s Level: 2. Understand
HAPS Objective: O02.04 Explain the roles of coenzyme A, NAD, and FAD in metabolism.
HAPS Topic: Module O02 Introduction to metabolism.
Learning Objective: 03.04.08 Describe the importance of NADH and FADH2 in energy transfer
Section: 03.04
Topic: Cellular respiration

 

111.              

The electron transport chain

1.    

does not require oxygen, and involves proteins in the outer membrane of mitochondria.

1.    

does not require oxygen, and involves proteins in the cristae of mitochondria.

1.    

requires oxygen, and involves proteins in the outer membrane of mitochondria.

1.    

requires oxygen, and involves proteins in the cristae of mitochondria.

 

 

Bloom’s Level: 1. Remember
HAPS Objective: C11.02 With respect to glycolysis, the Krebs (citric acid or TCA) cycle, and the electron transport chain: compare and contrast energy input, efficiency of energy production, oxygen use, by-products and cellular location.
HAPS Topic: Module C11 Cellular respiration.
Learning Objective: 03.04.09 Explain the actions that take place in the electron transport system.
Section: 03.04
Topic: Cellular respiration

 

112.              

The proteins in the electron transport chain transport H+

1.   from the cytosol to the matrix.
B. from the matrix to the outer compartment.
C. from the outer compartment to the cytosol.
D. from the outer compartment to the matrix.
E. from the cristae to the matrix.

 

Bloom’s Level: 2. Understand
HAPS Objective: O03.01b With respect to carbohydrate metabolism: Describe the processes of glycolysis, formation of acetyl CoA, the Kreb’s (TCA) cycle, and the electron transport chain, including the substrates and products of each, their locations within the cell and the energy yield of each process.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.09 Explain the actions that take place in the electron transport system.
Section: 03.04
Topic: Cellular respiration

113.              

The enzyme that harnesses the energy of H+ diffusion down its concentration gradient within a mitochondrion to make high-energy molecules for the cell is

1.   ATP phosphatase.
B. ATP synthetase.
C. pyruvate decarboxylase.
D. succinic dehydrogenase.
E. creatine phosphatase.

 

Bloom’s Level: 1. Remember
HAPS Objective: O03.01c With respect to carbohydrate metabolism: Describe the process of chemiosmosis and its role in ATP production.
HAPS Topic: Module O03 Cellular respiration & the catabolism & anabolism of carbohydrates, lipids, & proteins.
Learning Objective: 03.04.09 Explain the actions that take place in the electron transport system.
Section: 03.04
Topic: Cellular respiration

 

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