Question 1

Which of the following is the correct sequence?

Accepted Answer

A)   Acetyl-CoA formation, glycolysis, electron-transport chain, citric acid cycle
B)   Acetyl-CoA formation, citric acid cycle, electron transport chain, glycolysis
C)   Citric acid cycle, glycolysis, acetyl-CoA formation, electron transport chain
D)   Glycolysis, acetyl-CoA formation, citric acid cycle, electron transport chain
E)   Glycolysis, citric acid cycle, acetyl-CoA formation, electron transport chainF) A) and D)
G) A) and C)

Question 2

Which of the following minerals is important in acid-base balance?

Accepted Answer

A)   Calcium
B)   Chlorine
C)   Iron
D)   Manganese
E)   SodiumF) None of the above
G) A) and B)

Question 3

Use the following key to choose the best answer.
-(1)  Heat loss wearing a hat
(2)  Heat loss without a hat

Accepted Answer

A)  Carbohydrates
B)  Lipids
C)  Proteins
D)  Nucleic acidsE) A) and D)
F) C) and D)

Question 4

When is NAD+ reduced to form NADH in glycolysis?

Accepted Answer

A)   After cleavage of sugar
B)   First step of the process
C)   Right before the cleavage step
D)   Right before conversion to pyruvic acidE) A) and B)
F) A) and C)

Question 5

What would happen to a vitamin if its chemical structure is destroyed by catabolism?

Accepted Answer

A)   It could be recycled.
B)   It would become nonfunctional.
C)   It becomes a provitamin.
D)   It becomes a coenzyme.
E)   Nothing; this is normal.F) A) and C)
G) C) and D)

Question 6

Which of the following organs can store glycogen?

Accepted Answer

A)   Spleen and pancreas
B)   Kidney and adrenal gland
C)   Large and small intestines
D)   Liver and muscles
E)   Stomach and pancreasF) B) and D)
G) C) and D)

Question 7

Use the following key to choose the best answer.
-Cellulose

Accepted Answer

A)  Carbohydrates
B)  Lipids
C)  Proteins
D)  Nucleic acidsE) C) and D)
F) A) and B)

Question 8

During periods of fasting, why is fat said to have a protein-sparing effect?

Accepted Answer

A)   The body oxidizes its spare protein before it depletes its fat reserves.
B)   The body metabolizes fats and proteins through the same metabolic pathways.
C)   The body must have an adequate fat intake in order to absorb and metabolize proteins.
D)   The body must have an adequate protein intake in order to absorb and metabolize fats.
E)   The body does not oxidize its proteins unless it has consumed its fat reserves first.F) A) and E)
G) A) and D)

Question 9

Which of the following are events of the absorptive state? (Check all that apply.)

Accepted Answer

A)   Triglycerides stored in adipose tissue
B)   Glucose converted to glycogen
C)   Lipids and proteins used for fuel
D)   Synthesis of proteins
E)   GlycogenolysisF) A) and B)
G) B) and D)

Question 10

In glycolysis,

Accepted Answer

A)   NAD+ is reduced to form NADH.
B)   more energy is used than produced.
C)   glucose is formed as an end product.
D)   glyceraldehyde-3-phosphate is used as an enzyme.
E)   oxygen must be present for it to start.F) A) and B)
G) B) and C)

Question 11

Tim has been on a low-fat, no carbohydrate diet for two months. Which of the following would you expect to find in large quantities in his urine?

Accepted Answer

A)   Glucose
B)   Lactate
C)   Pyruvate
D)   Ketone bodies
E)   ProteinsF) B) and E)
G) C) and D)

Question 12

What is the glutamic acid made from transamination used for?

Accepted Answer

A)   It enters the citric acid cycle.
B)   It is used to make other nonessential amino acids.
C)   It is used to produce ATP.
D)   None of the choices are correct.E) B) and D)
F) None of the above

Question 13

Each NADH molecule fed into the electron transport chain produces approximately ________ ATPs.

Accepted Answer

A)   2
B)   3
C)   4
D)   5
E)   6F) None of the above
G) B) and D)

Question 14

Which of the following vitamins is mismatched with its function?

Accepted Answer

A)   Vitamin D - bone growth
B)   Vitamin A - rhodopsin synthesis
C)   Folate - synthesis of clotting factors
D)   Vitamin C - collagen synthesis
E)   Vitamin B12 - red blood cell productionF) C) and E)
G) B) and D)

Question 15

Acetyl CoA

Accepted Answer

A)   can enter the electron transport system directly.
B)   is a by product of glycolysis.
C)   might be used in ketogenesis.
D)   is needed to start oxidative deamination.
E)   is converted to pyruvate.F) B) and D)
G) A) and E)

Question 16

If oxygen is present, what is the net yield of ATP produced by the oxidation of one molecule of glucose?

Accepted Answer

A)   4
B)   18
C)   22
D)   36
E)   40F) A) and C)
G) C) and E)

Question 17

Arrange the following steps of protein metabolism in correct sequence.
1)  Ammonia is converted to urea in the liver.
2)  Oxidative deamination of an amino acid.
3)  Urea is eliminated by the kidney.
4)  Ammonia and keto acids are formed.

Accepted Answer

A)   1, 3, 4, 2
B)   2, 4, 1, 3
C)   3, 1, 4, 2
D)   4, 1, 3, 2
E)   2, 3, 1, 4F) A) and B)
G) A) and E)

Question 18

Use the following key to choose the best answer.
-Adipose tissue

Accepted Answer

A)  Carbohydrates
B)  Lipids
C)  Proteins
D)  Nucleic acidsE) A) and B)
F) None of the above

Question 19

The energy cost for assimilation of food is called ________.

Accepted Answer

A)   the thermic effect of food
B)   the basal metabolic rate
C)   the caloric intake
D)   homeothermy
E)   free energyF) A) and E)
G) A) and D)

Question 20

Oxidative deamination is a chemical process in which

Accepted Answer

A)   protein is synthesized.
B)   amino acids are buffered in the kidney.
C)   the amine group is removed from an amino acid.
D)   fatty acids are broken down to yield acetyl CoA.
E)   glutamic acid is produced.F) A) and B)
G) None of the above

Exam 25: Nutrition, Metabolism, and Temperature Regulation

Use the following key to choose the best answer. -Adipose tissue

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Use the following key to choose the best answer. -(1) Heat loss wearing a hat (2) Heat loss without a hat

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Arrange the following steps of protein metabolism in correct sequence. 1) Ammonia is converted to urea in the liver. 2) Oxidative deamination of an amino acid. 3) Urea is eliminated by the kidney. 4) Ammonia and keto acids are formed.

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In glycolysis,

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Which of the following is the correct sequence?

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What would happen to a vitamin if its chemical structure is destroyed by catabolism?

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Which of the following vitamins is mismatched with its function?

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What is the glutamic acid made from transamination used for?

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Each NADH molecule fed into the electron transport chain produces approximately ________ ATPs.

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Which of the following minerals is important in acid-base balance?

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Tim has been on a low-fat, no carbohydrate diet for two months. Which of the following would you expect to find in large quantities in his urine?

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Use the following key to choose the best answer. -Cellulose

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The energy cost for assimilation of food is called ________.

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Which of the following are events of the absorptive state? (Check all that apply.)

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Acetyl CoA

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When is NAD+ reduced to form NADH in glycolysis?

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If oxygen is present, what is the net yield of ATP produced by the oxidation of one molecule of glucose?

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Which of the following organs can store glycogen?

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During periods of fasting, why is fat said to have a protein-sparing effect?

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Oxidative deamination is a chemical process in which

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When is NAD⁺ reduced to form NADH in glycolysis?

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