Question 1

The electron transport chain receives electrons directly from:

Accepted Answer

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

Question 2

If no oxygen is available to a cell, then the net ATP production resulting from the metabolism of a single glucose molecule is:

Accepted Answer

A)  no ATP.
B)  one ATP molecule.
C)  two ATP molecules.
D)  34 or 36 ATP molecules.
E)  34 or 38 ATP molecules.F) B) and D)
G) C) and E)

Question 3

________ is the first stage in glucose metabolism and does not require oxygen.

Accepted Answer

The answer of ________ is the first stage in glucose...

Question 4

The products of the Krebs cycle include:

Accepted Answer

A)  ATP only.
B)  carbon dioxide only.
C)  energy carriers only.
D)  carbon dioxide and energy carriers only.
E)  ATP, carbon dioxide, and energy carriers.F) All of the above
G) A) and B)

Question 5

Some people trying to lose weight have gone on the "Atkins diet," in which they eat mostly high-protein, low-carbohydrate foods such as meat, cheese, and eggs. The amino acids in these protein-rich diets, such as alanine, glycine, and serine, can be converted to pyruvate by deamination (removal of the amino group) . Based on this scenario as well as your knowledge of cellular respiration, how many ATP, NADH, and FADH2 molecules will be generated from one molecule of alanine during the mitochondrial matrix reactions?

Accepted Answer

A)  one FADH2, four NADH, and one ATP
B)  two FADH2, six NADH, and two ATP
C)  no FADH2, one NADH, and two ATP
D)  two FADH2, three NADH, and two ATP
E)  one FADH2, one NADH, and one ATPF) A) and C)
G) C) and D)

Question 6

Which of the following processes requires oxygen?

Accepted Answer

A)  glycolysis
B)  the Krebs cycle
C)  the electron transport chain
D)  fermentationE) C) and D)
F) B) and D)

Question 7

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

Accepted Answer

Glycolysis would stop when all...

Question 8

Which of the following processes occurs in the cytoplasm?

Accepted Answer

A)  glycolysis
B)  the Krebs cycle
C)  the electron transport chainD) All of the above
E) None of the above

Question 9

The end product of glycolysis is:

Accepted Answer

A)  two pyruvate molecules.
B)  two citric acid molecules.
C)  one G3P molecule.
D)  one lactate molecule.
E)  two NAD+ molecules.F) B) and E)
G) A) and B)

Question 10

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 cellular respiration for maximum ATP production.
B)  only oxygen for maximum ATP production.
C)  some lactate fermentation.
D)  both cellular respiration and oxygen for maximum ATP production.E) B) and C)
F) None of the above

Question 11

During the fermentation of one molecule of glucose, the net production of ATP is:

Accepted Answer

A)  one molecule.
B)  two molecules.
C)  three molecules.
D)  six molecules.
E)  eight molecules.F) C) and D)
G) A) and C)

Question 12

When oxygen is present:

Accepted Answer

A)  most animal cells utilize aerobic cellular respiration.
B)  most animal cells carry on fermentation and produce lactate.
C)  most bacteria and yeasts carry on fermentation.
D)  two ATP molecules are produced for each glucose molecule.
E)  most animals convert CO2 to glucose.F) B) and D)
G) A) and E)

Question 13

During glycolysis, two ATP molecules are "spent" in order to convert glucose to the highly reactive molecule:

Accepted Answer

A)  glyceraldehyde 3-phosphate.
B)  FADH2.
C)  NADH.
D)  fructose bisphosphate.
E)  pyruvate.F) B) and C)
G) C) and D)

Question 14

The inner membrane of the mitochondria can be compared functionally to the thylakoid membranes of the chloroplast because both contain a system for:

Accepted Answer

A)  enzyme synthesis.
B)  pyruvate production.
C)  glucose synthesis.
D)  anaerobic respiration.
E)  electron transport.F) C) and D)
G) A) and B)

Question 15

Chemiosmosis in mitochondria directly results in the synthesis of:

Accepted Answer

A)  NADH.
B)  FADH2.
C)  H2O.
D)  acetyl CoA.
E)  ATP.F) B) and E)
G) A) and D)

Question 16

In the mitochondrial matrix, oxygen combines with ________ to form ________.

Accepted Answer

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

Question 17

In vertebrate animal cells, where does the synthesis of lactate occur?

Accepted Answer

A)  fluid portion of the cytoplasm
B)  surface of ribosomes
C)  mitochondrial matrix
D)  mitochondrial inner membranes
E)  nucleusF) A) and B)
G) None of the above

Question 18

Which of the following is an example of an electron-carrier molecule?

Accepted Answer

A)  citric acid
B)  CO2
C)  acetyl CoA
D)  NADH
E)  ATPF) B) and C)
G) C) and D)

Question 19

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

Accepted Answer

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

Question 20

Which kind of metabolic poison would interfere with glycolysis?

Accepted Answer

A)  an agent that reacts with oxygen and depletes its concentration in the cell
B)  an agent that binds to pyruvate and inactivates it
C)  an agent that closely mimics the structure of glucose but is not capable of being metabolized
D)  an agent that reacts with NADH and oxidizes it to NAD+
E)  an agent that inhibits the formation of acetyl coenzyme AF) None of the above
G) A) and D)

Exam 8: Harvesting Energy: Glycolysis and Cellular Respiration

Correct Answer
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When oxygen is present:

Correct Answer
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Which of the following processes requires oxygen?

Correct Answer
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Chemiosmosis in mitochondria directly results in the synthesis of:

Correct Answer
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If no oxygen is available to a cell, then the net ATP production resulting from the metabolism of a single glucose molecule is:

Correct Answer
verified

The inner membrane of the mitochondria can be compared functionally to the thylakoid membranes of the chloroplast because both contain a system for:

Correct Answer
verified

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 Answer
verified

In the mitochondrial matrix, oxygen combines with to form .

Correct Answer
verified

The electron transport chain receives electrons directly from:

Correct Answer
verified

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

Correct Answer
verified

The end product of glycolysis is:

Correct Answer
verified

In vertebrate animal cells, where does the synthesis of lactate occur?

Correct Answer
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The products of the Krebs cycle include:

Correct Answer
verified

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

Correct Answer
verified
Glycolysis would stop when all...
View Answer

During glycolysis, two ATP molecules are "spent" in order to convert glucose to the highly reactive molecule:

Correct Answer
verified

Which of the following is an example of an electron-carrier molecule?

Correct Answer
verified

________ is the first stage in glucose metabolism and does not require oxygen.

Correct Answer
verified

During the fermentation of one molecule of glucose, the net production of ATP is:

Correct Answer
verified

Which of the following processes occurs in the cytoplasm?

Correct Answer
verified

Which kind of metabolic poison would interfere with glycolysis?

Correct Answer
verified

Exam 8: Harvesting Energy: Glycolysis and Cellular Respiration

Correct AnswerverifiedShow Answer

When oxygen is present:

Correct AnswerverifiedShow Answer

Which of the following processes requires oxygen?

Correct AnswerverifiedShow Answer

Chemiosmosis in mitochondria directly results in the synthesis of:

Correct AnswerverifiedShow Answer

If no oxygen is available to a cell, then the net ATP production resulting from the metabolism of a single glucose molecule is:

Correct AnswerverifiedShow Answer

The inner membrane of the mitochondria can be compared functionally to the thylakoid membranes of the chloroplast because both contain a system for:

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

In the mitochondrial matrix, oxygen combines with ________ to form ________.

Correct AnswerverifiedShow Answer

The electron transport chain receives electrons directly from:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The end product of glycolysis is:

Correct AnswerverifiedShow Answer

In vertebrate animal cells, where does the synthesis of lactate occur?

Correct AnswerverifiedShow Answer

The products of the Krebs cycle include:

Correct AnswerverifiedShow Answer

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

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

During glycolysis, two ATP molecules are "spent" in order to convert glucose to the highly reactive molecule:

Correct AnswerverifiedShow Answer

Which of the following is an example of an electron-carrier molecule?

Correct AnswerverifiedShow Answer

________ is the first stage in glucose metabolism and does not require oxygen.

Correct AnswerverifiedShow Answer

During the fermentation of one molecule of glucose, the net production of ATP is:

Correct AnswerverifiedShow Answer

Which of the following processes occurs in the cytoplasm?

Correct AnswerverifiedShow Answer

Which kind of metabolic poison would interfere with glycolysis?

Correct AnswerverifiedShow Answer

Correct Answer
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In the mitochondrial matrix, oxygen combines with to form .

Correct Answer
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Correct Answer
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Correct Answer
verified
Glycolysis would stop when all...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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