Question 1

The electron transport system is a series of _________ reactions.

Accepted Answer

A)  composition-decomposition
B)  dehydration synthesis-hydrolysis
C)  oxidation-reduction
D)  reversibleE) A) and D)
F) None of the above

Question 2

Fatty acids are NOT an energy source for

Accepted Answer

A)  the brain.
B)  resting skeletal muscle.
C)  the liver.
D)  the heart.E) A) and D)
F) None of the above

Question 3

Acetyl CoA and NAD are the end-products of the citric acid cycle.

Accepted Answer

A) True 
 B)False

Question 4

The transport of protons from the intermembrane space to the mitochondrial matrix occurs via

Accepted Answer

A)  ATP synthase.
B)  transaminase.
C)  lactate dehydrogenase.
D)  FADH-coenzyme Q reductase complex.E) B) and C)
F) A) and B)

Question 5

Fatty acid metabolism

Accepted Answer

A)  occurs via glycolysis.
B)  occurs via oxidative deamination.
C)  occurs via the Cori cycle.
D)  occurs via beta-oxidation.E) C) and D)
F) A) and C)

Question 6

______________ is the opposite of glycogenesis.

Accepted Answer

A)  Glycolysis
B)  Glyconeogenesis
C)  Glycogenolysis
D)  GluconeogenesisE) All of the above
F) A) and D)

Question 7

Catabolic reactions use energy to synthesize large molecules.

Accepted Answer

A) True 
 B)False

Question 8

Lactic acid is the result of LDH (lactic acid dehydrogenase) mediated __________ of pyruvic acid with electrons taken from NADH + H+.

Accepted Answer

A)  oxidation
B)  reduction
C)  phosphorylation
D)  hydrolysisE) B) and D)
F) B) and C)

Question 9

The importance of the citric acid cycle in energy production is the formation of significant amounts of

Accepted Answer

A)  ATP.
B)  lactic acid.
C)  NADH.
D)  carbon dioxide.E) A) and C)
F) All of the above

Question 10

Proline is an essential amino acid only in children.

Accepted Answer

A) True 
 B)False

Question 11

Acetyl CoA

Accepted Answer

A)  can enter the citric acid cycle.
B)  can reversibly form ketone bodies.
C)  can directly form pyruvic acid.
D)  Both can enter the citric acid cycle and can reversibly form ketone bodies.E) B) and C)
F) A) and D)

Question 12

Which of the following is NOT a molecule of the electron transport system?

Accepted Answer

A)  coenzyme Q
B)  coenzyme A
C)  flavin mononucleotide (FMN) 
D)  cytochrome bE) None of the above
F) All of the above

Question 13

Formation of the maximum number of acetyl CoA molecules from one glucose,produces ______________ molecules of carbon dioxide.

Accepted Answer

A)  no
B)  one
C)  two
D)  fourE) A) and B)
F) C) and D)

Question 14

Nonessential amino acids include

Accepted Answer

A)  arginine.
B)  lysine.
C)  methionine.
D)  tryptophan.E) None of the above
F) A) and B)

Question 15

Prior to entering the citric acid cycle,amino acids must be reductively deaminated.

Accepted Answer

A) True 
 B)False

Question 16

Acetyl coenzyme A enables the products of glycolysis to enter the citric acid cycle.

Accepted Answer

A) True 
 B)False

Question 17

Accumulation of lactic acid contributes to

Accepted Answer

A)  decreased brain function.
B)  oxygen debt.
C)  glycogen synthesis.
D)  decreased liver gluconeogenesis.E) B) and D)
F) B) and C)

Question 18

Most of the glucose secreted by the liver during fasting is due to

Accepted Answer

A)  glycogenolysis.
B)  gluconeogenesis.
C)  lipolysis.
D)  deamination.E) B) and D)
F) B) and C)

Question 19

To go through glycolysis,_________ ATP per glucose molecule must be "invested" in order to activate the glucose molecule.

Accepted Answer

A)  one
B)  two
C)  three
D)  fourE) All of the above
F) B) and D)

Question 20

To form lactic acid from pyruvic acid it is necessary to have

Accepted Answer

A)  NAD.
B)  FAD.
C)  NADH.
D)  FADH.E) A) and B)
F) None of the above

Exam 5: Cell Respiration and Metabolism

Catabolic reactions use energy to synthesize large molecules.

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Acetyl CoA and NAD are the end-products of the citric acid cycle.

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Which of the following is NOT a molecule of the electron transport system?

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______________ is the opposite of glycogenesis.

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Most of the glucose secreted by the liver during fasting is due to

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Proline is an essential amino acid only in children.

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Fatty acids are NOT an energy source for

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Acetyl CoA

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The electron transport system is a series of _________ reactions.

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Nonessential amino acids include

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To go through glycolysis,_________ ATP per glucose molecule must be "invested" in order to activate the glucose molecule.

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The transport of protons from the intermembrane space to the mitochondrial matrix occurs via

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Fatty acid metabolism

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Formation of the maximum number of acetyl CoA molecules from one glucose,produces ______________ molecules of carbon dioxide.

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Prior to entering the citric acid cycle,amino acids must be reductively deaminated.

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Accumulation of lactic acid contributes to

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Acetyl coenzyme A enables the products of glycolysis to enter the citric acid cycle.

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To form lactic acid from pyruvic acid it is necessary to have

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Lactic acid is the result of LDH (lactic acid dehydrogenase) mediated __________ of pyruvic acid with electrons taken from NADH + H+.

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The importance of the citric acid cycle in energy production is the formation of significant amounts of

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Lactic acid is the result of LDH (lactic acid dehydrogenase) mediated __________ of pyruvic acid with electrons taken from NADH + H⁺.

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