Question 1

Of the following sources of amino acids, which would be best absorbed in normal, healthy people?

Accepted Answer

A)  Whole proteins
B)  Predigested proteins
C)  Proteins from raw foods
D)  Mixture of free amino acidsE) C) and D)
F) A) and B)

Question 2

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) B) and D)
F) A) and B)

Question 3

Supplements of which of the following amino acids are reported to lower blood pressure and reduce homocysteine levels?

Accepted Answer

A)  Arginine
B)  Cysteine
C)  Tryptophan
D)  PhenylalanineE) A) and B)
F) C) and D)

Question 4

Which of the following describes an association between protein intake and kidney function?

Accepted Answer

A)  Low-protein diets increase the risk for kidney stone formation
B)  Restricting protein intake may slow the progression of kidney disease
C)  High protein intakes over the long term represent a risk factor for kidney disease
D)  Liberal protein intakes result in high urea production, which increases the long-term efficiency of the kidneysE) B) and C)
F) A) and D)

Question 5

Your cousin Wanda was born with a genetic defect affecting her digestion, namely, a lack of intestinal villus tripeptidases and dipeptidases.Which of the following digestive processes would not take place?

Accepted Answer

A)  Protein → oligopeptides
B)  Peptides → amino acids
C)  Amino acids → peptides
D)  Polypeptides → tripeptidesE) None of the above
F) A) and D)

Question 6

What is the Daily Value for protein based on a 2000-kcalorie intake?

Accepted Answer

A)  25 g
B)  50 g
C)  75 g
D)  100 gE) None of the above
F) C) and D)

Question 7

What is meant by protein turnover?

Accepted Answer

A)  Nitrogen equilibrium
B)  The antibody-antigen complex
C)  The synthesis and degradation of body proteins
D)  The secondary structure of proteins that initiates foldingE) All of the above
F) A) and D)

Question 8

Which of the following describes a relationship between protein intake and calcium metabolism?

Accepted Answer

A)  Calcium excretion falls with increasing intake of animal-derived proteins
B)  Calcium excretion rises with increasing intake of animal-derived proteins
C)  Calcium absorption declines with higher intakes of plant-derived proteins
D)  Calcium absorption increases with higher intakes of animal-derived proteinsE) A) and B)
F) None of the above

Question 9

Dietary restriction of phenylalanine combined with adequate tyrosine is the usual treatment for people born with the disorder

Accepted Answer

A)  DNA.
B)  ALC.
C)  NLM.
D)  PKU.E) C) and D)
F) B) and D)

Question 10

Approximately how many grams of protein are found in one quart of milk?

Accepted Answer

A)  5
B)  12
C)  25
D)  32E) A) and B)
F) A) and C)

Question 11

Which of the following is an assumption made in the formulation of the RDA for protein?

Accepted Answer

A)  Dietary protein is of high quality only
B)  Dietary protein is of animal origin only
C)  Dietary carbohydrate and fat intakes are adequate
D)  Dietary protein should represent 12% of total energyE) A) and C)
F) B) and D)

Question 12

If protein needs are expressed per kilogram of body weight, which of the following describes the requirements of infants?

Accepted Answer

A)  Less than adults
B)  Similar to adults
C)  Greater than adults
D)  Less than adolescentsE) A) and B)
F) B) and C) C

Question 13

If a person consumes 65 grams of protein and a total of 2700 kcalories per day, approximately what percentage of energy would be derived from protein?

Accepted Answer

A)  7
B)  10
C)  14
D)  20E) A) and B)
F) B) and C)

Question 14

All of the following assumptions are made by the committee in setting the RDA for protein except

Accepted Answer

A)  adequate kcalories will be consumed.
B)  protein eaten will be of mixed quality.
C)  the fat content of the diet will be high.
D)  other nutrients in the diet will be adequate.E) None of the above
F) All of the above

Question 15

What is meant by the amino acid sequence of a protein?

Accepted Answer

A)  Number of side chains in the protein
B)  Folding arrangement of the peptide chain
C)  Order of amino acids in the peptide chain
D)  Order of only the essential amino acids in the proteinE) All of the above
F) B) and D) C

Question 16

What process results in the hardening of an egg when it is exposed to heat?

Accepted Answer

A)  Solidification
B)  Denaturation
C)  Condensation
D)  Protein interactionE) C) and D)
F) B) and C)

Question 17

What primary factor governs the quality of a food protein?

Accepted Answer

A)  Fat content
B)  Essential amino acid content
C)  Complex carbohydrate content
D)  Nonessential amino acid contentE) A) and D)
F) C) and D)

Question 18

What type of protein would the body make in order to heal a wound?

Accepted Answer

A)  Ferritin
B)  Albumin
C)  Collagen
D)  HemoglobinE) A) and D)
F) All of the above

Question 19

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 C)
F) All of the above

Question 20

Which of the following is a feature of the protein RDA?

Accepted Answer

A)  The recommendations are generous
B)  It is highest proportionately for adult males
C)  It is established at 8 grams per kilogram of ideal body weight
D)  An assumption is made that dietary protein is from animal sources onlyE) A) and B)
F) All of the above A

Exam 6: Protein: Amino Acids

Of the following sources of amino acids, which would be best absorbed in normal, healthy people?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Supplements of which of the following amino acids are reported to lower blood pressure and reduce homocysteine levels?

Correct AnswerverifiedShow Answer

Which of the following describes an association between protein intake and kidney function?

Correct AnswerverifiedShow Answer

Your cousin Wanda was born with a genetic defect affecting her digestion, namely, a lack of intestinal villus tripeptidases and dipeptidases.Which of the following digestive processes would not take place?

Correct AnswerverifiedShow Answer

What is the Daily Value for protein based on a 2000-kcalorie intake?

Correct AnswerverifiedShow Answer

What is meant by protein turnover?

Correct AnswerverifiedShow Answer

Which of the following describes a relationship between protein intake and calcium metabolism?

Correct AnswerverifiedShow Answer

Dietary restriction of phenylalanine combined with adequate tyrosine is the usual treatment for people born with the disorder

Correct AnswerverifiedShow Answer

Approximately how many grams of protein are found in one quart of milk?

Correct AnswerverifiedShow Answer

Which of the following is an assumption made in the formulation of the RDA for protein?

Correct AnswerverifiedShow Answer

If protein needs are expressed per kilogram of body weight, which of the following describes the requirements of infants?

Correct AnswerverifiedC

If a person consumes 65 grams of protein and a total of 2700 kcalories per day, approximately what percentage of energy would be derived from protein?

Correct AnswerverifiedShow Answer

All of the following assumptions are made by the committee in setting the RDA for protein except

Correct AnswerverifiedShow Answer

What is meant by the amino acid sequence of a protein?

Correct AnswerverifiedC

What process results in the hardening of an egg when it is exposed to heat?

Correct AnswerverifiedShow Answer

What primary factor governs the quality of a food protein?

Correct AnswerverifiedShow Answer

What type of protein would the body make in order to heal a wound?

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

Which of the following is a feature of the protein RDA?

Correct AnswerverifiedA

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C

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C

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A