Question 1

Glycolysis depends upon a continuous supply of ____.

Accepted Answer

A)   NADP
B)   pyruvate
C)   NAD+
D)   NADH
E)   H2OF) None of the above
G) C) and D)

Question 2

When molecules are broken apart in respiration,____.

Accepted Answer

A)   the heat produced is used to drive biological reactions
B)   the oxygen in the compounds that are broken apart is used as an energy source
C)   the energy released is channeled into molecules of ATP
D)   ATP is converted into ADP
E)   ADP is released as a waste productF) B) and E)
G) C) and D)

Question 3

Labeling. Use these molecules to label the major inputs and/or outputs of the citric acid cycle on the figure below.Figure 7.8
 2 B) NADH C) ADP + Pi D) FADH2 E) ATP" class="answers-bank-image d-inline" rel="preload" >
-What molecule corresponds to the item labeled as "58" in the accompanying figure?

Accepted Answer

A)  CO2
B)  NADH
C)  ADP + Pi
D)  FADH2
E)  ATPF) A) and E)
G) D) and E)

Question 4

Where in a cell does glycolysis occur?

Accepted Answer

A)   Cytoplasm
B)   Golgi body
C)   Nucleoid
D)   Mitochondrion
E)   Rough endoplasmic reticulumF) A) and B)
G) B) and E)

Question 5

During alcoholic fermentation,____________________ is converted into ethanol.

Accepted Answer

Pyruvate

Question 6

Labeling. Use these molecules to label the major inputs and/or outputs of the citric acid cycle on the figure below.Figure 7.8
 2 B) NADH C) ADP + Pi D) FADH2 E) ATP" class="answers-bank-image d-inline" rel="preload" >
-What molecule corresponds to the item labeled as "62" in the accompanying figure?

Accepted Answer

A)  CO2
B)  NADH
C)  ADP + Pi
D)  FADH2
E)  ATPF) C) and D)
G) A) and D)

Question 7

During the citric acid cycle,____.

Accepted Answer

A)   four CO2 molecules are produced
B)   oxaloacetate is consumed
C)   electrons and H+ are removed from the coenzymes NADH and FADH
D)   molecules of carbon dioxide are consumed
E)   oxidative phosphorylation occursF) B) and E)
G) B) and C)

Question 8

Cells dismantle triglycerides by first breaking the bonds that connect fatty acid tails to _______.

Accepted Answer

Glycerol

Question 9

Electron transfer phosphorylation yields ____ ATPs.

Accepted Answer

A)   four
B)   Two
C)   Three
D)   32
E)   ZeroF) All of the above
G) D) and E)

Question 10

The breakdown of ____ for energy production results in the formation of ammonia as a waste product.

Accepted Answer

A)   carbohydrates
B)   fats
C)   proteins
D)   carbohydrates and fats
E)   fats and proteinsF) A) and D)
G) B) and E)

Question 11

Which of the following is true regarding lactate fermentation in muscle cells?

Accepted Answer

A)   It provides a quick burst of ATP.
B)   It sustains muscle contractions during prolonged exercise.
C)   It causes muscle soreness.
D)   It is the predominant form of respiration in muscles.
E)   Its products accumulate in muscle for extended periods of time.F) B) and E)
G) D) and E)

Question 12

In the breakdown of glucose,a phosphorylated six-carbon compound is split into two phosphorylated three-carbon sugars,which are named ____.

Accepted Answer

A)   PGAL
B)   pyruvate
C)   acetyl-CoA
D)   lactate
E)   acetaldehydeF) A) and B)
G) A) and C)

Question 13

For animals,the final hydrogen acceptor in cellular respiration is ____.

Accepted Answer

A)   NADP+
B)   sulfur
C)   oxygen
D)   magnesium
E)   phosphorusF) B) and D)
G) A) and E)

Question 14

Pyruvate is the end product of ____.

Accepted Answer

A)   glycolysis
B)   acetyl-CoA formation
C)   fermentation
D)   aerobic respiration
E)   the citric acid cycleF) None of the above
G) A) and D)

Question 15

Classification. Use the five compounds listed below for the following questions.
-This compound is produced from acetaldehyde when it accepts electrons and a hydrogen ion from NADH.

Accepted Answer

A)  Ethanol
B)  Pyruvate
C)  Lactate
D)  Carbon dioxide
E)  AcetaldehydeF) A) and B)
G) None of the above

Question 16

What is an anaerobic glucose-breakdown pathway that produces ATP without use of an electron transfer chain?

Accepted Answer

A)   Cellular respiration
B)   Fermentation
C)   Glycolysis
D)   Aerobic respiration
E)   Anaerobic respirationF) B) and D)
G) A) and B)

Question 17

Select the one most appropriate choice for each.
-Fermentation

Accepted Answer

A)  Produces NADH and CO2; pyruvate oxidized
B)  Produces ATP, NADH, and CO2
C)  Splits glucose into two pyruvate molecules
D)  Regenerates NAD+ as pyruvate is converted to ethanol or lactate
E)  Uses a membrane-bound system that sets up production of ATPF) C) and E)
G) None of the above

Question 18

Classification. Use the five processes listed below for the following questions.
-This process precedes the citric acid cycle.

Accepted Answer

A)  Glycolysis
B)  Aerobic respiration
C)  Electron transfer phosphorylation
D)  Alcoholic fermentation
E)  Lactate fermentationF) D) and E)
G) A) and D)

Question 19

Aerobic respiration and fermentation ________.

Accepted Answer

A)   evolved in different living organisms to utilize energy stored in glucose with equal efficiency
B)   occur only in animal cells because plants carry out photosynthesis
C)   utilize fat as primary energy source
D)   occur at the same rate throughout all cells of the body
E)   start with glycolysis.F) B) and E)
G) C) and D) E

Question 20

Which of the following is not a product of the breakdown of dietary proteins for energy?

Accepted Answer

A)   Amino acids
B)   Ammonia
C)   Pyruvate
D)   Acetyl-CoA
E)   MitrateF) B) and C)
G) A) and D)

Exam 7: How Cells Release Chemical Energy

Glycolysis depends upon a continuous supply of ____.

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When molecules are broken apart in respiration,____.

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Labeling. Use these molecules to label the major inputs and/or outputs of the citric acid cycle on the figure below.Figure 7.8 -What molecule corresponds to the item labeled as "58" in the accompanying figure?

Correct AnswerverifiedShow Answer

Where in a cell does glycolysis occur?

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During alcoholic fermentation,____________________ is converted into ethanol.

Correct AnswerverifiedPyruvate

Labeling. Use these molecules to label the major inputs and/or outputs of the citric acid cycle on the figure below.Figure 7.8 -What molecule corresponds to the item labeled as "62" in the accompanying figure?

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During the citric acid cycle,____.

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Cells dismantle triglycerides by first breaking the bonds that connect fatty acid tails to _______.

Correct AnswerverifiedGlycerol

Electron transfer phosphorylation yields ____ ATPs.

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The breakdown of ____ for energy production results in the formation of ammonia as a waste product.

Correct AnswerverifiedShow Answer

Which of the following is true regarding lactate fermentation in muscle cells?

Correct AnswerverifiedShow Answer

In the breakdown of glucose,a phosphorylated six-carbon compound is split into two phosphorylated three-carbon sugars,which are named ____.

Correct AnswerverifiedShow Answer

For animals,the final hydrogen acceptor in cellular respiration is ____.

Correct AnswerverifiedShow Answer

Pyruvate is the end product of ____.

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Classification. Use the five compounds listed below for the following questions. -This compound is produced from acetaldehyde when it accepts electrons and a hydrogen ion from NADH.

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What is an anaerobic glucose-breakdown pathway that produces ATP without use of an electron transfer chain?

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Select the one most appropriate choice for each. -Fermentation

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Classification. Use the five processes listed below for the following questions. -This process precedes the citric acid cycle.

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Aerobic respiration and fermentation ________.

Correct AnswerverifiedE

Which of the following is not a product of the breakdown of dietary proteins for energy?

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Pyruvate

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Glycerol

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E

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