Question 1

The subunits from which ATP is made are:

Accepted Answer

A)  ADP and phosphate.
B)  FAD and NAD+.
C)  FAD and NADPH.
D)  ADP and FAD.
E)  ADP and NAD+.F) All of the above
G) B) and D)

Question 2

What establishes the electrochemical gradient across a membrane to provide energy for ATP production?

Accepted Answer

A)  The chloroplast's electron transport system provides the ions.
B)  Hydrogen ions naturally collect on the outside of the organelle membrane.
C)  Hydrogen ions are pumped across the membrane by carrier proteins of the electron transport chain.
D)  All of the choices establish the electrochemical gradient.E) A) and C)
F) All of the above

Question 3

Which statement is NOT true about enzyme inhibition?

Accepted Answer

A)  In competitive inhibition,the inhibitor binds to the active site of the enzyme.
B)  In noncompetitive inhibition,the inhibitor binds to the allosteric site of the substrate.
C)  In irreversible inhibition,a poison binds to the enzyme so that it can never work again.
D)  Most inhibitors act in a reversible fashion.
E)  All of the statements are true.F) B) and C)
G) None of the above

Question 4

Of the following,which process will not denature a protein?

Accepted Answer

A)  heating to temperatures above 100 C
B)  addition of strong acids or strong bases
C)  phosphorylation
D)  addition of distilled waterE) None of the above
F) A) and B)

Question 5

Identify the graph that depicts the reaction C  →\rightarrow→

Accepted Answer

A)   
B)   
C)    D) All of the above
E) A) and C)

Question 6

Which best describes the first law of thermodynamics?

Accepted Answer

A)  Energy is changed from one form to another with a loss of usable energy.
B)  Energy is not created nor destroyed,but it can change from one energy form to another.
C)  Energy can be created from matter or used to produce matter.
D)  Some useful energy is lost as heat whenever an energy transfer occurs.
E)  Energy transfers are always 100% efficient in changing energy from one useful form to another.F) B) and C)
G) C) and D)

Question 7

In this reaction,the reactant (s) are _____________ and the coenzyme NAD is ____________.

Accepted Answer

A)  reduced; oxidized
B)  oxidized; oxidized
C)  reduced; reduced
D)  oxidized; reducedE) C) and D)
F) None of the above D

Question 8

A coenzyme is

Accepted Answer

A)  an ionic cofactor that interacts with an enzyme to allow it to work.
B)  a protein cofactor that interacts with an enzyme to allow it to work.
C)  a nonprotein organic cofactor that interacts with an enzyme to allow it to work.
D)  an ionic cofactor that interacts with an enzyme to inhibit it.
E)  a protein cofactor that interacts with an enzyme to inhibit it.F) B) and D)
G) A) and D)

Question 9

What are the end products of photosynthesis?

Accepted Answer

A)  glucose & oxygen
B)  glucose & ATP
C)  carbon dioxide & energy
D)  carbon dioxide & waterE) None of the above
F) All of the above

Question 10

Identify the missing substrate in the reaction that will oxidize NAD+.NAD+ + 2e + _____ = NADH

Accepted Answer

A)  H+
B)  3H+
C)  OH_
D)  2H+E) C) and D)
F) A) and C)

Question 11

In order to roll a rock down a hillside,you must first push it up out of the hole in which it rests.Pushing the rock is analogous to the energy of activation of a chemical reaction.

Accepted Answer

A) True 
 B)False

Question 12

__________ represents the first reactant of this metabolic pathway and ________ represents the endproduct (s) of the pathway?

Accepted Answer

A)  A; E
B)  B; E and F
C)  A; E and F
D)  A and B; D and EE) A) and D)
F) A) and B)

Question 13

The activity of an enzyme might be increased by all of the following except ________.

Accepted Answer

A)  increase in substrate concentration
B)  a vitamin
C)  a 2-4 degree increase in temperature
D)  the presence of leadE) A) and D)
F) All of the above D

Question 14

A living organism represents stored energy in the form of chemical compounds.When an organism dies,what happens to this stored energy?

Accepted Answer

A)  All chemicals immediately lose their high-energy bonds.
B)  All molecules immediately degrade into basic elements.
C)  All energy immediately leaves,and that is one manifestation that the organism is dead.
D)  The chemical compounds in cells lose their organization over time because there is no longer an input of energy to maintain the organized state.
E)  The chemical compounds remain exactly intact and ready to start up again unless digested by a consumer or decay organism.F) C) and D)
G) A) and D) D

Question 15

What is the coenzyme used during the cellular respiration pathway to produce oxidation?

Accepted Answer

A)  NAD+
B)  NAD-
C)  NADP+
D)  CO_E) B) and C)
F) A) and D)

Question 16

Which of the following conditions is in defiance of the Second Law of Thermodynamics?

Accepted Answer

A)  As our body converts glucose into ATP some of the energy is given off in the form of heat.
B)  The temperature of your car's engine begins to increase as you drive to work.
C)  When we are cold our body shivers as a response to the decrease in body temperature.
D)  None of these are in defiance of the Second Law of Thermodynamics.E) A) and B)
F) A) and C)

Question 17

Feedback inhibition is the process that turns off an enzyme in a metabolic pathway as the result of inhibitory actions of a product of the pathway.

Accepted Answer

A) True 
 B)False

Question 18

Which organelles contain functioning ATP synthetase complexes in their membranes?

Accepted Answer

A)  Golgi complexes and lysosomes.
B)  Mitochondria and chloroplasts.
C)  Endoplasmic reticulum and vesicles.
D)  Vacuoles and vesicles.
E)  Mitochondria and endoplasmic reticulum.F) None of the above
G) A) and B)

Question 19

While eating a container of yogurt,you have to leave,so you store the yogurt in the refrigerator.A day later you return and find the surface of the yogurt is no longer smooth but has broken into several liquified products.You correctly guess that enzymes from your saliva,via the spoon,have continued digesting the yogurt in your absence.What will happen over time?

Accepted Answer

A)  The reaction will soon stop because the amount of saliva is small,and you would have to add more saliva to continue the degradation.
B)  The reaction will continue,since the enzyme is not denatured by the reaction.
C)  The reaction will continue until half is digested and then stop because the reaction between substrate and product will be balanced.
D)  Absolutely no degradation of the yogurt will occur naturally unless in the presence of this enzyme. InE) B) and D)
F) B) and C)

Question 20

Which of the following is NOT a form of potential energy?

Accepted Answer

A)  food
B)  water in a dam
C)  a muscle contracting
D)  All of the choices are not potential energy.E) A) and C)
F) None of the above

Exam 6: Metabolism: Energy and Enzymes

The subunits from which ATP is made are:

Correct Answer
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What establishes the electrochemical gradient across a membrane to provide energy for ATP production?

Correct Answer
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Which statement is NOT true about enzyme inhibition?

Correct Answer
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Of the following,which process will not denature a protein?

Correct Answer
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Identify the graph that depicts the reaction C $\rightarrow$

Correct Answer
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Which best describes the first law of thermodynamics?

Correct Answer
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In this reaction,the reactant (s) are _ and the coenzyme NAD is .

Correct Answer
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D

A coenzyme is

Correct Answer
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What are the end products of photosynthesis?

Correct Answer
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Identify the missing substrate in the reaction that will oxidize NAD⁺.NAD⁺ + 2e + _____ = NADH

Correct Answer
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In order to roll a rock down a hillside,you must first push it up out of the hole in which it rests.Pushing the rock is analogous to the energy of activation of a chemical reaction.

Correct Answer
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__ represents the first reactant of this metabolic pathway and represents the endproduct (s) of the pathway?

Correct Answer
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The activity of an enzyme might be increased by all of the following except ________.

Correct Answer
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D

A living organism represents stored energy in the form of chemical compounds.When an organism dies,what happens to this stored energy?

Correct Answer
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D

What is the coenzyme used during the cellular respiration pathway to produce oxidation?

Correct Answer
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Which of the following conditions is in defiance of the Second Law of Thermodynamics?

Correct Answer
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Feedback inhibition is the process that turns off an enzyme in a metabolic pathway as the result of inhibitory actions of a product of the pathway.

Correct Answer
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Which organelles contain functioning ATP synthetase complexes in their membranes?

Correct Answer
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Which of the following is NOT a form of potential energy?

Correct Answer
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Exam 6: Metabolism: Energy and Enzymes

The subunits from which ATP is made are:

Correct AnswerverifiedShow Answer

What establishes the electrochemical gradient across a membrane to provide energy for ATP production?

Correct AnswerverifiedShow Answer

Which statement is NOT true about enzyme inhibition?

Correct AnswerverifiedShow Answer

Of the following,which process will not denature a protein?

Correct AnswerverifiedShow Answer

Identify the graph that depicts the reaction C →\rightarrow→

Correct AnswerverifiedShow Answer

Which best describes the first law of thermodynamics?

Correct AnswerverifiedShow Answer

In this reaction,the reactant (s) are _____________ and the coenzyme NAD is ____________.

Correct AnswerverifiedD

A coenzyme is

Correct AnswerverifiedShow Answer

What are the end products of photosynthesis?

Correct AnswerverifiedShow Answer

Identify the missing substrate in the reaction that will oxidize NAD+.NAD+ + 2e + _____ = NADH

Correct AnswerverifiedShow Answer

In order to roll a rock down a hillside,you must first push it up out of the hole in which it rests.Pushing the rock is analogous to the energy of activation of a chemical reaction.

Correct AnswerverifiedShow Answer

__________ represents the first reactant of this metabolic pathway and ________ represents the endproduct (s) of the pathway?

Correct AnswerverifiedShow Answer

The activity of an enzyme might be increased by all of the following except ________.

Correct AnswerverifiedD

A living organism represents stored energy in the form of chemical compounds.When an organism dies,what happens to this stored energy?

Correct AnswerverifiedD

What is the coenzyme used during the cellular respiration pathway to produce oxidation?

Correct AnswerverifiedShow Answer

Which of the following conditions is in defiance of the Second Law of Thermodynamics?

Correct AnswerverifiedShow Answer

Feedback inhibition is the process that turns off an enzyme in a metabolic pathway as the result of inhibitory actions of a product of the pathway.

Correct AnswerverifiedShow Answer

Which organelles contain functioning ATP synthetase complexes in their membranes?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following is NOT a form of potential energy?

Correct AnswerverifiedShow Answer

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Identify the graph that depicts the reaction C $\rightarrow$

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In this reaction,the reactant (s) are _ and the coenzyme NAD is .

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D

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Identify the missing substrate in the reaction that will oxidize NAD⁺.NAD⁺ + 2e + _____ = NADH

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__ represents the first reactant of this metabolic pathway and represents the endproduct (s) of the pathway?

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D

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D

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