Question 1

By-products of cellular respiration include _____.

Accepted Answer

A)   FADH2 and NADH
B)   NADH and ATP
C)   oxygen and heat
D)   carbon dioxide and water
E)   carbon dioxide and oxygenF) A) and B)
G) A) and D)

Question 2

Cellular respiration uses oxygen to convert the chemical energy stored in organic molecules into ________.

Accepted Answer

A)   energy in other organic molecules
B)   energy in ATP
C)   energy in carbon dioxide
D)   water
E)   pyruvateF) A) and E)
G) A) and D)

Question 3

As electrons are passed down the electron transport chain, the energy released is used immediately to ________.

Accepted Answer

A)   form ATP
B)   concentrate H+ in the intermembrane space
C)   move phosphate groups to ATP synthase
D)   release CO2 to the matrix
E)   concentrate H+ in the cytoplasm of the cellF) A) and B)
G) A) and C)

Question 4

The production of ATP in glycolysis and the citric acid cycle occurs through

Accepted Answer

A)   the removal of electrons and hydrogen from glucose.
B)   the removal of a phosphate group from a substrate that is then added to ADP.
C)   the capture of solar energy that donates electrons.
D)   the breakdown of glucose to pyruvate.E) A) and D)
F) A) and C)

Question 5

The number of ATP produced during cellular respiration from one glucose molecule is ________.

Accepted Answer

A)   4
B)   28
C)   20
D)   38E) B) and D)
F) A) and B)

Question 6

If three molecules of glucose went through glycolysis and into the citric acid cycle, how many times would the preparatory reaction occur?

Accepted Answer

A)   one
B)   two
C)   four
D)   six
E)   twelveF) A) and D)
G) A) and E)

Question 7

The citric acid cycle starts with ________ and yields ___________.

Accepted Answer

A)   lactic acid; carbon dioxide
B)   glucose; 32 ATPs
C)   scetyl CoA; lactic acid or alcohol
D)   scetyl CoA, NAD, FAD, and ADP; dioxide, NADH, FADH2, and ATP
E)   carbon dioxide; oxygenF) B) and D)
G) All of the above D

Question 8

Which of the following is the correct sequence of events in cellular respiration?

Accepted Answer

A)   glycolysis→preparatory reaction→citric acid cycle→electron transport chain
B)   Krebs cycle→electron transport→glycolysis→preparatory reaction
C)   glycolysis→Krebs cycle→electron transport chain
D)   Krebs cycle→glycolysis→electron transport chain→preparatory reaction
E)   glycolysis→electron transport chain→preparatory reactionF) B) and C)
G) C) and D)

Question 9

Why is it necessary for ATP to be used in the energy-investment phase of glycolysis?

Accepted Answer

A)   Adding the phosphate to the glucose molecule allows the later reactions that take place in the energy payoff phase to occur.
B)   Adding the phosphate to the glucose molecule breaks it into pyruvate.
C)   There is no purpose to adding the phosphate to the glucose; it just happens that way.
D)   When ATP is broken into adenosine, triglycerides, and phosphate, it supplies energy to produce more ATP later in oxidative phosphorylation.
E)   The energy released when ATP becomes ADP is harnessed and used to pump hydrogen ions across the mitochondrial membrane.F) None of the above
G) A) and B)

Question 10

Where do the protons and electrons come from that are used in the electron transport chain?

Accepted Answer

A)   ATP
B)   NADH
C)   FADH2
D)   ADP
E)   NADH and FADH2F) A) and B)
G) B) and C)

Question 11

Which process is used to make bread rise?

Accepted Answer

A)   lactic acid fermentation
B)   glycolysis
C)   alcoholic fermentation
D)   the Krebs cycle
E)   cellular respirationF) A) and C)
G) C) and E)

Question 12

Susan suffered from a heart attack. When the doctors tested the heart muscle they found that she had an increased ratio of lactic acid to pyruvic acid in her heart. What does this say about the availability of oxygen in her heart muscle cells?

Accepted Answer

A)   The heart cells must have received too much oxygen.
B)   The heart cells had not received adequate oxygen supply.
C)   The heart cells had a build up of carbon dioxide, poisoning her cells.
D)   The lactic acid built up as a result of cellular respiration occurring at too fast of a rate.
E)   The heart cells had too much carbon dioxide build up.F) B) and D)
G) A) and B)

Question 13

During hibernation the rate of cellular respiration in a mammal is typically less than half the rate measured when the mammal is not hibernating. This slowed cellular respiration is probably accompanied by which of the following.

Accepted Answer

A)   unchanged pulse rate and reduced body temperature
B)   reduced pulse rate and reduced body temperature
C)   reduced pulse rate and increased body temperature
D)   unchanged pulse rate and increased body temperature
E)   unchanged pulse rate and unchanged body temperatureF) A) and E)
G) B) and D) B

Question 14

Cellular respiration is the opposite of what other cellular process?

Accepted Answer

A)   fermentation
B)   cell division
C)   hydrolysis
D)   photosynthesis
E)   dehydration synthesisF) A) and B)
G) C) and D) D

Question 15

In the energy payoff phase of glycolysis, both ATP and NADH are formed. What purpose do each of these molecules serve in the cell?

Accepted Answer

A)   ATP acts as a way to break up glucose to form pyruvate, while NADH serves as an electron acceptor.
B)   ATP acts as a power source for the citric acid cycle, while NADH serves as energy to run the cell.
C)   ATP acts as a power source for performing cellular work, while NADH serves as an electron carrier to allow for greater ATP production.
D)   ATP acts as an electron acceptor, while NADH serves as a way to break up glucose to form pyruvate.
E)   ATP acts as a power source for performing cellular work, while NADH acts as a power source for photosynthesis.F) C) and D)
G) A) and C)

Question 16

In animals, lactate forms from fermentation. Lactate ________.

Accepted Answer

A)   can be used to produce additional ATP
B)   is toxic and causes muscle to fatigue
C)   is stored in the muscle for future energy use
D)   converts into carbon dioxide and is released in the blood stream
E)   can be used as an energy source in animalsF) A) and B)
G) A) and C)

Question 17

Which one of the following is the correct sequence of stages in cellular respiration?

Accepted Answer

A)   citric acid cycle, glycolysis, electron transport chain, preparatory stage
B)   citric acid cycle, electron transport chain, glycolysis
C)   glycolysis, preparatory stage, citric acid cycle, electron transport chain
D)   preparatory stage, electron transport chain, citric acid cycle, glycolysis
E)   citric acid cycle, electron transport chain, glycolysis, preparatory stageF) None of the above
G) B) and D)

Question 18

The energy source that drives the production of ATP in oxidative phosphorylation is

Accepted Answer

A)   the removal of electrons and hydrogen from glucose.
B)   the removal of a phosphate group from a substrate that is then added to ADP.
C)   the capture of solar energy that donates electrons.
D)   the breakdown of glucose to pyruvate.E) A) and D)
F) A) and C)

Question 19

In Fig. 7.1, part Y represents what part of a mitochondrion?

Accepted Answer

A)   outer mitochondrial membrane
B)   cristae
C)   mitochondrial matrix
D)   intermembrane space
E)   thylakoidsF) All of the above
G) A) and B)

Question 20

The energy released from glucose by the process of cellular respiration is in the form of _____.

Accepted Answer

A)   ATP only
B)   ATP and heat
C)   heat only
D)   ATP and NADH
E)   chemical and heat energyF) A) and C)
G) B) and E)

Exam 7: Energy for Cells

By-products of cellular respiration include _____.

Correct AnswerverifiedShow Answer

Cellular respiration uses oxygen to convert the chemical energy stored in organic molecules into ________.

Correct AnswerverifiedShow Answer

As electrons are passed down the electron transport chain, the energy released is used immediately to ________.

Correct AnswerverifiedShow Answer

The production of ATP in glycolysis and the citric acid cycle occurs through

Correct AnswerverifiedShow Answer

The number of ATP produced during cellular respiration from one glucose molecule is ________.

Correct AnswerverifiedShow Answer

If three molecules of glucose went through glycolysis and into the citric acid cycle, how many times would the preparatory reaction occur?

Correct AnswerverifiedShow Answer

The citric acid cycle starts with ________ and yields ___________.

Correct AnswerverifiedD

Which of the following is the correct sequence of events in cellular respiration?

Correct AnswerverifiedShow Answer

Why is it necessary for ATP to be used in the energy-investment phase of glycolysis?

Correct AnswerverifiedShow Answer

Where do the protons and electrons come from that are used in the electron transport chain?

Correct AnswerverifiedShow Answer

Which process is used to make bread rise?

Correct AnswerverifiedShow Answer

Susan suffered from a heart attack. When the doctors tested the heart muscle they found that she had an increased ratio of lactic acid to pyruvic acid in her heart. What does this say about the availability of oxygen in her heart muscle cells?

Correct AnswerverifiedShow Answer

During hibernation the rate of cellular respiration in a mammal is typically less than half the rate measured when the mammal is not hibernating. This slowed cellular respiration is probably accompanied by which of the following.

Correct AnswerverifiedB

Cellular respiration is the opposite of what other cellular process?

Correct AnswerverifiedD

In the energy payoff phase of glycolysis, both ATP and NADH are formed. What purpose do each of these molecules serve in the cell?

Correct AnswerverifiedShow Answer

In animals, lactate forms from fermentation. Lactate ________.

Correct AnswerverifiedShow Answer

Which one of the following is the correct sequence of stages in cellular respiration?

Correct AnswerverifiedShow Answer

The energy source that drives the production of ATP in oxidative phosphorylation is

Correct AnswerverifiedShow Answer

In Fig. 7.1, part Y represents what part of a mitochondrion?

Correct AnswerverifiedShow Answer

The energy released from glucose by the process of cellular respiration is in the form of _____.

Correct AnswerverifiedShow Answer

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The citric acid cycle starts with and yields ___.

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D

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B

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D

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