Question 1

Which of the following is NOT an essential amino acid in human nutrition?

Accepted Answer

A)  Proline
B)  Threonine
C)  Methionine
D)  TryptophanE) A) and B)
F) A) and C)

Question 2

When nitrogen taken into the body exceeds nitrogen losses,we say the person is in

Accepted Answer

A)  a healthy state.
B)  nitrogen equilibrium.
C)  positive nitrogen balance.
D)  negative nitrogen balance.E) A) and B)
F) A) and C)

Question 3

Protein sparing in the body is best achieved when a person ingests

Accepted Answer

A)  proteins of plant origin only.
B)  proteins of animal origin only.
C)  adequate levels of carbohydrate and fat.
D)  mixed protein sources on alternate days.E) All of the above
F) B) and D)

Question 4

What function does a buffer perform?

Accepted Answer

A)  Helps emulsify fats
B)  Helps maintain a constant pH
C)  Facilitates chemical reactions
D)  Helps protect against plaque buildupE) All of the above
F) B) and D)

Question 5

Which of the following are precursors of urea synthesis?

Accepted Answer

A)  All amino acids
B)  Animal proteins only
C)  Essential amino acids only
D)  Nonessential amino acids onlyE) None of the above
F) B) and D)

Question 6

The body's amino acid pool consists of

Accepted Answer

A)  essential amino acids only.
B)  endogenous amino acids only.
C)  nonessential amino acids only.
D)  both essential and nonessential amino acids.E) A) and B)
F) A) and C)

Question 7

Jim,a college baseball player,tells you that he has started to take glutamine supplements.How would you advise him?

Accepted Answer

A)  As long as he keeps the dose under 10 g/day,the benefits outweigh the costs
B)  Since he plays baseball,he should consider taking alanine supplements instead
C)  Since he plays baseball,he should consider taking tryptophan supplements instead
D)  Since single amino acids do not occur naturally in foods,they offer no benefit to the body and may even be harmfulE) B) and D)
F) B) and C)

Question 8

Alberta is a 20 year old who has been a vegetarian for 3 years.She comes to you for advice after reading some material online by the Meat Promoters of America organization.One of their statements is: "...vegetarians are at risk for protein deficiency because they cannot consume all of the essential amino acids necessary for healthy individuals." How should Alberta be advised?

Accepted Answer

A)  She should consume dairy and egg products at every meal to protect herself against protein deficiency
B)  She should avoid the "limiting" amino acids because they are limiting her ability to maintain proper protein status
C)  Because the statement is basically true,she should consider eating small quantities of meat every day in order to avoid protein deficiency
D)  Although many foods don't provide all the essential amino acids individually,she could consume complementary proteins throughout the day,which would provide all the essential amino acids she needsE) None of the above
F) A) and B)

Question 9

What is the process by which heat or acidity disrupts the normal shape of a protein chain?

Accepted Answer

A)  Digestion
B)  Condensation
C)  Denaturation
D)  HydrogenationE) All of the above
F) B) and D)

Question 10

Which of the following is characteristic of protein nutrition in vegetarians?

Accepted Answer

A)  Vegetarians in general must practice complementary protein nutrition
B)  Most vegetarians should consume gelatin to ensure adequate tryptophan intake
C)  Healthy vegetarians typically consume protein sources of very high digestibility
D)  Most vegetarians eating a variety of foods need not balance essential amino acid intake at each mealE) A) and B)
F) C) and D)

Question 11

What is the percent digestibility of most plant proteins?

Accepted Answer

A)  25-45
B)  50-65
C)  70-90
D)  95-99E) All of the above
F) A) and D)

Question 12

Jason is 35 years old and was recently diagnosed with 2 failing kidneys.He was advised to decrease the amount of protein he consumes.If Jason cheats by eating an 8-ounce steak for dinner tonight,shortly thereafter there would most likely be an increase in the urea levels of his

Accepted Answer

A)  urine.
B)  blood.
C)  stools.
D)  sweat.E) A) and B)
F) B) and C)

Question 13

The disease phenylketonuria is related chiefly to abnormal metabolism of

Accepted Answer

A)  lactose.
B)  omega-3 fats.
C)  soy polysaccharides.
D)  a certain amino acid.E) C) and D)
F) A) and D)

Question 14

Tissue swelling that results from water accumulating between cells is known as

Accepted Answer

A)  edema.
B)  acidosis.
C)  alkalosis.
D)  extravascularization.E) A) and B)
F) A) and C)

Question 15

Approximately how much urea (g) can be produced daily by the average adult?

Accepted Answer

A)  5 g
B)  50 g
C)  100 g
D)  250 gE) A) and B)
F) None of the above

Question 16

What is the composition of a tripeptide?

Accepted Answer

A)  One amino acid with three carbons
B)  Three amino acids bonded together
C)  One amino acid with three acid groups
D)  Three small protein chains bonded togetherE) A) and C)
F) None of the above

Question 17

After a hamburger is eaten,in what organ is the hydrolysis of its proteins initiated?

Accepted Answer

A)  Mouth
B)  Stomach
C)  Small intestine
D)  Large intestineE) A) and B)
F) B) and C)

Question 18

What is the nitrogen balance of a person who consumed a 3500-kcalorie diet containing 10% protein and excreted a total of 12 grams of nitrogen? (Protein is 16% nitrogen.)

Accepted Answer

A)  0 g
B)  -3 g
C)  -1 g
D)  +2 gE) B) and C)
F) A) and D)

Question 19

Which of the following is a feature of homocysteine?

Accepted Answer

A)  It is found only in animal foods
B)  It is a risk factor for osteoporosis
C)  It is increased in the blood of coffee drinkers
D)  It is increased in the blood of vitamin C-deficient peopleE) C) and D)
F) None of the above

Question 20

In the study of protein nutrition,what term describes the amount of amino acids absorbed from a given amount of protein consumed?

Accepted Answer

A)  Digestibility
B)  Completeness
C)  Complementary index
D)  Comparative equivalenceE) B) and C)
F) All of the above

Exam 6: Protein: Amino Acids

Approximately how much urea (g) can be produced daily by the average adult?

Correct Answer
verified

Protein sparing in the body is best achieved when a person ingests

Correct Answer
verified

After a hamburger is eaten,in what organ is the hydrolysis of its proteins initiated?

Correct Answer
verified

Which of the following are precursors of urea synthesis?

Correct Answer
verified

What function does a buffer perform?

Correct Answer
verified

When nitrogen taken into the body exceeds nitrogen losses,we say the person is in

Correct Answer
verified

The disease phenylketonuria is related chiefly to abnormal metabolism of

Correct Answer
verified

Jim,a college baseball player,tells you that he has started to take glutamine supplements.How would you advise him?

Correct Answer
verified

What is the process by which heat or acidity disrupts the normal shape of a protein chain?

Correct Answer
verified

Which of the following is characteristic of protein nutrition in vegetarians?

Correct Answer
verified

Tissue swelling that results from water accumulating between cells is known as

Correct Answer
verified

What is the nitrogen balance of a person who consumed a 3500-kcalorie diet containing 10% protein and excreted a total of 12 grams of nitrogen? (Protein is 16% nitrogen.)

Correct Answer
verified

What is the composition of a tripeptide?

Correct Answer
verified

Jason is 35 years old and was recently diagnosed with 2 failing kidneys.He was advised to decrease the amount of protein he consumes.If Jason cheats by eating an 8-ounce steak for dinner tonight,shortly thereafter there would most likely be an increase in the urea levels of his

Correct Answer
verified

Which of the following is NOT an essential amino acid in human nutrition?

Correct Answer
verified

What is the percent digestibility of most plant proteins?

Correct Answer
verified

Which of the following is a feature of homocysteine?

Correct Answer
verified

The body's amino acid pool consists of

Correct Answer
verified

Correct Answer
verified

In the study of protein nutrition,what term describes the amount of amino acids absorbed from a given amount of protein consumed?

Correct Answer
verified

Exam 6: Protein: Amino Acids

Approximately how much urea (g) can be produced daily by the average adult?

Correct AnswerverifiedShow Answer

Protein sparing in the body is best achieved when a person ingests

Correct AnswerverifiedShow Answer

After a hamburger is eaten,in what organ is the hydrolysis of its proteins initiated?

Correct AnswerverifiedShow Answer

Which of the following are precursors of urea synthesis?

Correct AnswerverifiedShow Answer

What function does a buffer perform?

Correct AnswerverifiedShow Answer

When nitrogen taken into the body exceeds nitrogen losses,we say the person is in

Correct AnswerverifiedShow Answer

The disease phenylketonuria is related chiefly to abnormal metabolism of

Correct AnswerverifiedShow Answer

Jim,a college baseball player,tells you that he has started to take glutamine supplements.How would you advise him?

Correct AnswerverifiedShow Answer

What is the process by which heat or acidity disrupts the normal shape of a protein chain?

Correct AnswerverifiedShow Answer

Which of the following is characteristic of protein nutrition in vegetarians?

Correct AnswerverifiedShow Answer

Tissue swelling that results from water accumulating between cells is known as

Correct AnswerverifiedShow Answer

What is the nitrogen balance of a person who consumed a 3500-kcalorie diet containing 10% protein and excreted a total of 12 grams of nitrogen? (Protein is 16% nitrogen.)

Correct AnswerverifiedShow Answer

What is the composition of a tripeptide?

Correct AnswerverifiedShow Answer

Jason is 35 years old and was recently diagnosed with 2 failing kidneys.He was advised to decrease the amount of protein he consumes.If Jason cheats by eating an 8-ounce steak for dinner tonight,shortly thereafter there would most likely be an increase in the urea levels of his

Correct AnswerverifiedShow Answer

Which of the following is NOT an essential amino acid in human nutrition?

Correct AnswerverifiedShow Answer

What is the percent digestibility of most plant proteins?

Correct AnswerverifiedShow Answer

Which of the following is a feature of homocysteine?

Correct AnswerverifiedShow Answer

The body's amino acid pool consists of

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In the study of protein nutrition,what term describes the amount of amino acids absorbed from a given amount of protein consumed?

Correct AnswerverifiedShow Answer

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