Question 1

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 B)
F) B) and C)

Question 2

The metabolism of alcohol begins in the

Accepted Answer

A)  liver.
B)  brain.
C)  stomach.
D)  intestines.E) A) and D)
F) A) and C)

Question 3

Which of the following is a feature of the metabolism of surplus dietary fat?

Accepted Answer

A)  Excess fat is almost all stored
B)  Excess fat promotes increased fat oxidation
C)  Excess fat spares breakdown of body proteins
D)  Conversion of excess fat to storage fat is inefficientE) B) and C)
F) A) and D)

Question 4

Approximately how many kcalories from ethanol are contained in one standard drink of vodka or rum?

Accepted Answer

A)  25
B)  50
C)  100
D)  200E) B) and C)
F) B) and D)

Question 5

What is the sequence of stages that brings about advanced liver disease caused by chronic alcohol toxicity?

Accepted Answer

A)  Fibrosis,gout,cirrhosis
B)  Fibrosis,cirrhosis,fat depletion
C)  Cirrhosis,fat accumulation,fibrosis
D)  Fat accumulation,fibrosis,cirrhosisE) A) and C)
F) All of the above

Question 6

In addition to energy,what are the principal end products of cellular oxidation of carbohydrates?

Accepted Answer

A)  Water and carbon dioxide
B)  Carbon,hydrogen,and urea
C)  Indigestible fiber and nitrogen
D)  Monosaccharides and amino acidsE) All of the above
F) None of the above

Question 7

After digestion and absorption,an amino acid not used to build protein will first be subjected to

Accepted Answer

A)  removal of its amino group.
B)  removal of its carboxyl group.
C)  hydrolysis of its peptide bond.
D)  condensation of its peptide bond.E) B) and C)
F) B) and D)

Question 8

Production of excessive amounts of acetyl CoA molecules leads to the synthesis of

Accepted Answer

A)  fatty acids only.
B)  fatty acids and glucose only.
C)  fatty acids and fructose only.
D)  fatty acids,glucose,and amino acids.E) A) and C)
F) B) and D)

Question 9

In a triglyceride that contains 54 carbon atoms,how many can become part of glucose?

Accepted Answer

A)  3
B)  9
C)  54
D)  108E) None of the above
F) A) and B)

Question 10

Which of the following is a feature of the electron transport chain?

Accepted Answer

A)  It captures energy in the high-energy bonds of ATP
B)  It pumps carbon dioxide across the mitochondrial membrane
C)  It is composed of a series of coenzymes that transfer electrons up a concentration gradient
D)  It combines oxygen from carbon dioxide with hydrogen generated from the splitting of waterE) B) and D)
F) C) and D)

Question 11

How are ketones formed?

Accepted Answer

A)  Condensation of lactic acid molecules
B)  Condensation of acetyl CoA molecules
C)  Hydrolysis of excess glycerol fragments
D)  Hydrolysis of excess pyruvate fragmentsE) None of the above
F) A) and D)

Question 12

What is the median weekly number of alcoholic drinks consumed by college students?

Accepted Answer

A)  1 1/2
B)  3
C)  5
D)  10E) A) and B)
F) A) and C)

Question 13

Which of the following is a characteristic of ketosis?

Accepted Answer

A)  It may lead to a lowering of blood pH
B)  It leads to increased appetite in most individuals
C)  It may be alleviated quickly by ingestion of some dietary fat
D)  It is a necessary physiological adjustment for maximum weight lossE) A) and C)
F) All of the above

Question 14

Which of the following is an example of a catabolic reaction?

Accepted Answer

A)  Glucose formation from glycerol
B)  Pyruvate formation from glucose
C)  Albumin formation from amino acids
D)  Palmitic acid formation from acetateE) C) and D)
F) A) and B)

Question 15

Which of the following is a characteristic of lactate production by muscle cells?

Accepted Answer

A)  It occurs only during intense exercise
B)  When rapid it causes muscle fatigue
C)  The lactate produced may eventually be used by the liver for glucose production d,It lowers pH of the muscle cell,thereby lowering muscle performanceD) B) and C)
E) All of the above

Question 16

Your middle-aged aunt says that she always feels more "tipsy" than her same-size husband,even though their alcohol intake is the same.You respond by saying to your aunt:

Accepted Answer

A)  "Men have greater amounts of liver acetaldehyde dehydrogenase and so can oxidize the alcohol at a faster rate."
B)  "Women have less stomach alcohol dehydrogenase enzyme and consequently absorb more of the alcohol into the bloodstream."
C)  "Men have greater amounts of alcohol dehydrogenase in the brain,resulting in reduced exposure of brain neurons to alcohol."
D)  "Women have less liver alcohol dehydrogenase and acetaldehyde dehydrogenase and so more alcohol is released into the systemic circulation."E) B) and D)
F) C) and D)

Question 17

The number of ATP molecules that can be produced from a molecule of protein,fat,or carbohydrate is generally related to the number of atoms of

Accepted Answer

A)  carbon.
B)  oxygen.
C)  nitrogen.
D)  hydrogen.E) A) and B)
F) B) and C)

Exam 7: Energy Metabolism

How are ketones formed?

Correct Answer
verified

After digestion and absorption,an amino acid not used to build protein will first be subjected to

Correct Answer
verified

Approximately how many kcalories from ethanol are contained in one standard drink of vodka or rum?

Correct Answer
verified

In a triglyceride that contains 54 carbon atoms,how many can become part of glucose?

Correct Answer
verified

What is the sequence of stages that brings about advanced liver disease caused by chronic alcohol toxicity?

Correct Answer
verified

The number of ATP molecules that can be produced from a molecule of protein,fat,or carbohydrate is generally related to the number of atoms of

Correct Answer
verified

Which of the following is a feature of the metabolism of surplus dietary fat?

Correct Answer
verified

Which of the following is a characteristic of lactate production by muscle cells?

Correct Answer
verified

Which of the following is a characteristic of ketosis?

Correct Answer
verified

Production of excessive amounts of acetyl CoA molecules leads to the synthesis of

Correct Answer
verified

What is the median weekly number of alcoholic drinks consumed by college students?

Correct Answer
verified

In addition to energy,what are the principal end products of cellular oxidation of carbohydrates?

Correct Answer
verified

Which of the following is an example of a catabolic reaction?

Correct Answer
verified

The metabolism of alcohol begins in the

Correct Answer
verified

Which of the following is a feature of the electron transport chain?

Correct Answer
verified

Your middle-aged aunt says that she always feels more "tipsy" than her same-size husband,even though their alcohol intake is the same.You respond by saying to your aunt:

Correct Answer
verified

What is acetaldehyde?

Correct Answer
verified

Exam 7: Energy Metabolism

How are ketones formed?

Correct AnswerverifiedShow Answer

After digestion and absorption,an amino acid not used to build protein will first be subjected to

Correct AnswerverifiedShow Answer

Approximately how many kcalories from ethanol are contained in one standard drink of vodka or rum?

Correct AnswerverifiedShow Answer

In a triglyceride that contains 54 carbon atoms,how many can become part of glucose?

Correct AnswerverifiedShow Answer

What is the sequence of stages that brings about advanced liver disease caused by chronic alcohol toxicity?

Correct AnswerverifiedShow Answer

The number of ATP molecules that can be produced from a molecule of protein,fat,or carbohydrate is generally related to the number of atoms of

Correct AnswerverifiedShow Answer

Which of the following is a feature of the metabolism of surplus dietary fat?

Correct AnswerverifiedShow Answer

Which of the following is a characteristic of lactate production by muscle cells?

Correct AnswerverifiedShow Answer

Which of the following is a characteristic of ketosis?

Correct AnswerverifiedShow Answer

Production of excessive amounts of acetyl CoA molecules leads to the synthesis of

Correct AnswerverifiedShow Answer

What is the median weekly number of alcoholic drinks consumed by college students?

Correct AnswerverifiedShow Answer

In addition to energy,what are the principal end products of cellular oxidation of carbohydrates?

Correct AnswerverifiedShow Answer

Which of the following is an example of a catabolic reaction?

Correct AnswerverifiedShow Answer

The metabolism of alcohol begins in the

Correct AnswerverifiedShow Answer

Which of the following is a feature of the electron transport chain?

Correct AnswerverifiedShow Answer

Your middle-aged aunt says that she always feels more "tipsy" than her same-size husband,even though their alcohol intake is the same.You respond by saying to your aunt:

Correct AnswerverifiedShow Answer

What is acetaldehyde?

Correct AnswerverifiedShow Answer

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