Question 1

Which of the following can be synthesized from all three energy-yielding nutrients?

Accepted Answer

A)  Lactate
B)  Glycogen
C)  Acetyl CoA
D)  OxaloacetateE) C) and D)
F) All of the above

Question 2

Which of the following accounts for the higher energy density of a fatty acid compared with the other energy-yielding nutrients?

Accepted Answer

A)  Fatty acids have a lower percentage of hydrogen-carbon bonds
B)  Fatty acids have a greater percentage of hydrogen-carbon bonds
C)  Other energy-yielding nutrients have a lower percentage of oxygen-carbon bonds
D)  Other energy-yielding nutrients undergo fewer metabolic reactions, thereby lowering the energy yieldE) All of the above
F) A) and B)

Question 3

What organ is first to absorb alcohol after a person takes a drink?

Accepted Answer

A)  Colon
B)  Stomach
C)  Jejunum
D)  DuodenumE) A) and B)
F) B) and C)

Question 4

Which of the following is not a possible fate of metabolized glucose?

Accepted Answer

A)  Urea
B)  Acetyl CoA
C)  Amino acids
D)  Muscle glycogenE) A) and B)
F) B) and D)

Question 5

A person with fruity odor on the breath demonstrates evidence of metabolic

Accepted Answer

A)  ketosis.
B)  alkalosis.
C)  transamination.
D)  anaerobic breakdown.E) None of the above
F) A) and B)

Question 6

Which of the following can not be formed from acetyl CoA molecules?

Accepted Answer

A)  Glucose
B)  Cholesterol
C)  Stearic acid
D)  Carbon dioxideE) A) and C)
F) A) and D)

Question 7

Ketonemia is defined as an elevation of

Accepted Answer

A)  ketones in the blood.
B)  ketones in the urine.
C)  alpha-ketoglutarate in the blood.
D)  alpha-ketoglutarate in the urine.E) A) and D)
F) All of the above

Question 8

All of the following are features of the metabolism of surplus dietary carbohydrate in human beings except

Accepted Answer

A)  excess glucose suppresses fat oxidation.
B)  excess glucose is oxidized only very slowly.
C)  excess glucose is first used to fill glycogen reserves.
D)  conversion of excess glucose to fat occurs only to a very limited extent.E) C) and D)
F) All of the above

Question 9

The Cori cycle involves the interconversion of

Accepted Answer

A)  lactate and glucose.
B)  glucose and amino acids.
C)  pyruvate and citric acids.
D)  fatty acids and acetyl CoA.E) C) and D)
F) A) and C)

Question 10

What is acetaldehyde?

Accepted Answer

A)  An intermediate in fatty acid synthesis
B)  An intermediate in alcohol metabolism
C)  The first product of fatty acid catabolism
D)  The TCA compound that combines with acetyl CoAE) A) and D)
F) B) and D)

Question 11

The health benefits of moderate alcohol intake occur in people with a starting age (years)  of

Accepted Answer

A)  21.
B)  35.
C)  55.
D)  65.E) A) and B)
F) A) and C)

Question 12

If a normal person expends 1200 kcalories while at rest, approximately how many are used by the brain?

Accepted Answer

A)  40
B)  100
C)  200
D)  300E) A) and B)
F) B) and C)

Question 13

If a person consumes 100 kcalories in excess of energy needs from olive oil, approximately what percentage of the kcalories are stored in the body?

Accepted Answer

A)  25
B)  45
C)  65
D)  95E) All of the above
F) A) and C)

Question 14

What is the major energy carrier molecule in most cells?

Accepted Answer

A)  ATP
B)  Glucose
C)  Pyruvate
D)  A kcalorieE) A) and B)
F) None of the above

Question 15

What percentage (by weight)  of a triglyceride molecule can be converted to glucose?

Accepted Answer

A)  0
B)  5
C)  50
D)  100E) A) and B)
F) All of the above

Question 16

Approximately what percentage of alcohol in the body is eliminated via the urine and breath?

Accepted Answer

A)  1
B)  2
C)  10
D)  25E) A) and B)
F) B) and D)

Question 17

Which of the following describes the sum of all chemical reactions that go on in living cells?

Accepted Answer

A)  Digestion
B)  Metabolism
C)  Absorption
D)  CatabolismE) C) and D)
F) B) and C)

Question 18

Which of the following is classified as a ketone body?

Accepted Answer

A)  Sorbitol
B)  Pyruvate
C)  Acetyl CoA
D)  AcetoacetateE) A) and B)
F) A) and C)

Question 19

Which of the following is a feature of aerobic metabolism?

Accepted Answer

A)  Little or no oxygen is consumed
B)  Lactic acid is a major byproduct
C)  Energy is produced more slowly than in anaerobic metabolism
D)  Pyruvate is converted to glucose by reverse glycolysis to yield a net of 2 ATPsE) A) and B)
F) A) and C)

Question 20

When a person is performing intense physical exercise and begins to feel fatigue and a burning pain in the muscles, the response of the muscles is to synthesize more

Accepted Answer

A)  lactate.
B)  glucose.
C)  citric acid.
D)  fatty acids.E) A) and C)
F) All of the above

Exam 7: Metabolism: Transformations and Interactions

Approximately what percentage of alcohol in the body is eliminated via the urine and breath?

Correct AnswerverifiedShow Answer

All of the following are features of the metabolism of surplus dietary carbohydrate in human beings except

Correct AnswerverifiedShow Answer

Ketonemia is defined as an elevation of

Correct AnswerverifiedShow Answer

Which of the following accounts for the higher energy density of a fatty acid compared with the other energy-yielding nutrients?

Correct AnswerverifiedShow Answer

A person with fruity odor on the breath demonstrates evidence of metabolic

Correct AnswerverifiedShow Answer

What is acetaldehyde?

Correct AnswerverifiedShow Answer

Which of the following is not a possible fate of metabolized glucose?

Correct AnswerverifiedShow Answer

Which of the following is a feature of aerobic metabolism?

Correct AnswerverifiedShow Answer

Which of the following can be synthesized from all three energy-yielding nutrients?

Correct AnswerverifiedShow Answer

What organ is first to absorb alcohol after a person takes a drink?

Correct AnswerverifiedShow Answer

The Cori cycle involves the interconversion of

Correct AnswerverifiedShow Answer

Which of the following describes the sum of all chemical reactions that go on in living cells?

Correct AnswerverifiedShow Answer

Which of the following is classified as a ketone body?

Correct AnswerverifiedShow Answer

The health benefits of moderate alcohol intake occur in people with a starting age (years) of

Correct AnswerverifiedShow Answer

When a person is performing intense physical exercise and begins to feel fatigue and a burning pain in the muscles, the response of the muscles is to synthesize more

Correct AnswerverifiedShow Answer

What is the major energy carrier molecule in most cells?

Correct AnswerverifiedShow Answer

Which of the following can not be formed from acetyl CoA molecules?

Correct AnswerverifiedShow Answer

If a person consumes 100 kcalories in excess of energy needs from olive oil, approximately what percentage of the kcalories are stored in the body?

Correct AnswerverifiedShow Answer

If a normal person expends 1200 kcalories while at rest, approximately how many are used by the brain?

Correct AnswerverifiedShow Answer

What percentage (by weight) of a triglyceride molecule can be converted to glucose?

Correct AnswerverifiedShow Answer

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