Question 1

Briefly describe the three main steps of aerobic glucose metabolism.

Accepted Answer

(1) Glycolysis (glucose converted to pyr...

Question 2

All of the following are true statements about ATP EXCEPT that it is

Accepted Answer

A)   the cell's principal compound for energy transfers.
B)   synthesized only within mitochondria.
C)   the molecule that all living cells rely on to do work.
D)   a short- term energy- storage compound.E) A) and B)
F) A) and C)

Question 3

How does one account for the bubbles in a glass of beer or champagne?

Accepted Answer

A)   Bubbles of CO2, produced by aerobic respiration in yeast cells, were trapped in the beverage at bottling.
B)   Bubbles of CO2 were formed by the yeast cells during glycolysis.
C)   The bubbles are simply air bubbles resulting from the brewing process.
D)   Bubbles of CO2 were produced by yeast during anaerobic metabolism and were trapped in the bottle.
E)   Lactate fermentation accounts for the bubbles.F) C) and D)
G) A) and D)

Question 4

Which of the following processes requires oxygen?

Accepted Answer

A)   The Krebs cycle
B)   Fermentation
C)   The ETC
D)   GlycolysisE) A) and B)
F) A) and C)

Question 5

During the glucose activation stage of glycolysis

Accepted Answer

A)   there is a net gain of four ATP molecules.
B)   fructose bisphosphate is split into two G3P molecules.
C)   there is a conversion of two G3P molecules to two pyruvate molecules.
D)   two ATP molecules are used to make one fructose bisphosphate molecule.
E)   there is a net gain of two ATP molecules.F) A) and E)
G) A) and D)

Question 6

Which of the following processes involves hydrogen ions moving through ATP synthase channels, generating ATP molecules?

Accepted Answer

A)   Glycolysis
B)   The Krebs cycle
C)   The ETCD) All of the above
E) B) and C)

Question 7

We breathe more heavily during exercise because our cells

Accepted Answer

A)   need more glucose to be broken down.
B)   are producing more CO2 and need to get rid of it.
C)   need more ADP to be converted to ATP.D) All of the above
E) None of the above

Question 8

At the end of aerobic cellular respiration, how many total carbon dioxide molecules are produced for each glucose metabolized?

Accepted Answer

A)   36
B)   32
C)   4
D)   6
E)   2F) A) and D)
G) A) and E)

Question 9

The organelles responsible for the bulk of ATP production via cellular respiration are the .

Accepted Answer

The answer of The organelles responsible for the bulk of...

Question 10

The step in aerobic respiration that produces the most ATP per molecule of glucose is

Accepted Answer

A)   alcohol fermentation.
B)   the ETC.
C)   glycolysis.
D)   lactate fermentation.
E)   the citric acid cycle.F) None of the above
G) A) and B)

Question 11

What is the final electron acceptor in cellular respiration?

Accepted Answer

A)   Oxygen
B)   Carbon dioxide
C)   NADH
D)   FADH2
E)   ATPF) A) and E)
G) B) and E)

Question 12

Why is it important that NAD+ molecules are regenerated during fermentation?

Accepted Answer

Glycolysis would stop when all...

Question 13

What is the significance of the conversion of pyruvate to lactate during fermentation?

Accepted Answer

A)   The oxidation of pyruvate becomes possible.
B)   NAD+ is regenerated for use in glycolysis.
C)   ATP is produced at a higher rate.
D)   Pyruvate becomes available to enter mitochondrial matrix reactions.
E)   The citric acid cycle is initiated.F) A) and E)
G) C) and E)

Question 14

Which of the following processes involves citric acid?

Accepted Answer

A)   The ETC
B)   The Krebs cycle
C)   GlycolysisD) B) and C)
E) None of the above

Question 15

For bacteria to continue growing rapidly when they shift from an aerobic environment to an anaerobic environment, they must

Accepted Answer

A)   produce ATP using NADH.
B)   produce more ATP per molecule of glucose during glycolysis.
C)   increase the rate of glycolysis.
D)   increase the rate of the Krebs cycle.
E)   increase the rate of glucose production.F) None of the above
G) B) and D)

Question 16

During the final events of cellular respiration, oxygen combines with to form .

Accepted Answer

A)   hydrogen ions only; water
B)   energy- depleted electrons and hydrogen ions; water
C)   carbon only; CO2
D)   energy- depleted electrons only; water
E)   energy- depleted electrons and carbon; CO2F) B) and C)
G) B) and D)

Question 17

From the beginning of glycolysis to the end of the Krebs cycle (excluding the ETC) , what has the cell gained from the breakdown of each molecule of glucose?

Accepted Answer

A)   2 molecules of ATP and 6 of NADH
B)   2 molecules of ATP, lactate, and NAD+
C)   4 molecules of ATP, 10 of NADH, and 2 of FADH2
D)   2 molecules of pyruvate
E)   2 molecules of ATP, 4 of NADH, and 2 of FADH2F) B) and D)
G) A) and E)

Question 18

During chemiosmosis, a hydrogen ion gradient is linked to the production of ATP.

Accepted Answer

A) True 
 B)False

Question 19

In aerobic cellular respiration, the ETC receives electrons directly from

Accepted Answer

A)   NADH and FADH2.
B)   ATP only.
C)   FADH2 only.
D)   NADH and ATP.
E)   NADH only.F) A) and B)
G) D) and E)

Question 20

As a bicyclist pedals up a hill to the finish line of a race and "feels the burn" in his leg muscles, those muscle cells are most likely utilizing

Accepted Answer

A)   only oxygen for maximum ATP production.
B)   some lactate fermentation and lactic starting to build up in his muscle tissue causing a cramp.
C)   only cellular respiration for maximum ATP production.
D)   both cellular respiration and oxygen for maximum ATP production.E) All of the above
F) C) and D)

Exam 8: Harvesting Energy: Glycolysis and Cellular Respiration

Briefly describe the three main steps of aerobic glucose metabolism.

Correct Answerverified(1) Glycolysis (glucose converted to pyr...View AnswerShow Answer

All of the following are true statements about ATP EXCEPT that it is

Correct AnswerverifiedShow Answer

How does one account for the bubbles in a glass of beer or champagne?

Correct AnswerverifiedShow Answer

In aerobic cellular respiration, the ETC receives electrons directly from

Correct AnswerverifiedShow Answer

As a bicyclist pedals up a hill to the finish line of a race and "feels the burn" in his leg muscles, those muscle cells are most likely utilizing

Correct AnswerverifiedShow Answer

Why is it important that NAD+ molecules are regenerated during fermentation?

Correct AnswerverifiedGlycolysis would stop when all...View AnswerShow Answer

For bacteria to continue growing rapidly when they shift from an aerobic environment to an anaerobic environment, they must

Correct AnswerverifiedShow Answer

Which of the following processes requires oxygen?

Correct AnswerverifiedShow Answer

During the glucose activation stage of glycolysis

Correct AnswerverifiedShow Answer

What is the final electron acceptor in cellular respiration?

Correct AnswerverifiedShow Answer

We breathe more heavily during exercise because our cells

Correct AnswerverifiedShow Answer

The organelles responsible for the bulk of ATP production via cellular respiration are the .

Correct AnswerverifiedShow Answer

Which of the following processes involves citric acid?

Correct AnswerverifiedShow Answer

At the end of aerobic cellular respiration, how many total carbon dioxide molecules are produced for each glucose metabolized?

Correct AnswerverifiedShow Answer

During the final events of cellular respiration, oxygen combines with to form .

Correct AnswerverifiedShow Answer

The step in aerobic respiration that produces the most ATP per molecule of glucose is

Correct AnswerverifiedShow Answer

What is the significance of the conversion of pyruvate to lactate during fermentation?

Correct AnswerverifiedShow Answer

Which of the following processes involves hydrogen ions moving through ATP synthase channels, generating ATP molecules?

Correct AnswerverifiedShow Answer

From the beginning of glycolysis to the end of the Krebs cycle (excluding the ETC) , what has the cell gained from the breakdown of each molecule of glucose?

Correct AnswerverifiedShow Answer

During chemiosmosis, a hydrogen ion gradient is linked to the production of ATP.

Correct AnswerverifiedShow Answer

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(1) Glycolysis (glucose converted to pyr...
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Glycolysis would stop when all...
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