Question 1

After digestion of proteins, what products are absorbed into the circulation?

Accepted Answer

A)  Free amino acids only
B)  Free amino acids and oligopeptides
C)  Free amino acids and dipeptides only
D)  Free amino acids, and a few dipeptides and tripeptidesE) None of the above
F) A) and C)

Question 2

Your friend Jill has just joined her community college soccer team.How much protein should she consume each day?

Accepted Answer

A)  0.8 g/kg
B)  up to 1.0 g/kg
C)  1.2-1.7 g/kg
D)  2.5-2.9 g/kgE) None of the above
F) All of the above

Question 3

Chronic protein-energy malnutrition in children is characterized by

Accepted Answer

A)  hyperactivity.
B)  shrunken liver.
C)  short height for age.
D)  low weight for height.E) B) and C)
F) A) and C)

Question 4

Approximately how many different amino acids are used in the synthesis of body proteins?

Accepted Answer

A)  5
B)  10
C)  20
D)  35E) C) and D)
F) B) and C)

Question 5

Protein-hydrolyzing enzymes are commonly known as

Accepted Answer

A)  proteases.
B)  hydrolyzers.
C)  prodigestins.
D)  denaturases.E) A) and C)
F) None of the above

Question 6

What is complementary protein nutrition?

Accepted Answer

A)  A dietary program that involves eating vegetable and animal proteins on alternating days
B)  A strategy that combines plant proteins in the same day to improve the balance of essential amino acids
C)  A technique developed specifically for the elderly that involves optimizing the ratio of protein intake to energy intake
D)  A body process that involves synthesis of crucial proteins from amino acids made available by the breakdown of storage proteinsE) None of the above
F) A) and B)

Question 7

How do sodium and potassium travel into and out of cells?

Accepted Answer

A)  Antidiuretic hormone transports potassium and prodiuretic hormone carries sodium
B)  There are specific transport proteins in the blood that deliver the minerals to the cell cytoplasm
C)  The balance of insulin and glucagon determines the movement of these minerals into and out of cells
D)  There are transport proteins within the cell membrane that pick up and release the minerals across the membraneE) C) and D)
F) A) and B)

Question 8

Which of the following animal-derived proteins is classified as a poor-quality protein?

Accepted Answer

A)  Fish
B)  Cheese
C)  Gelatin
D)  TurkeyE) A) and B)
F) B) and D)

Question 9

Excessive amounts of homocysteine in the blood are thought to increase the risk for

Accepted Answer

A)  cancer.
B)  diabetes.
C)  heart disease.
D)  protein-energy malnutrition.E) A) and B)
F) A) and D)

Question 10

What is the name of the inactive form of the protein-splitting enzyme in the stomach?

Accepted Answer

A)  Peptidase
B)  Propepsin
C)  Pepsinogen
D)  PropeptidaseE) B) and C)
F) A) and D)

Question 11

What is the process whereby an amino group is combined with a keto acid to form an amino acid?

Accepted Answer

A)  Deamination
B)  Ureagenesis
C)  Transamination
D)  AmmoniogenesisE) A) and C)
F) All of the above

Question 12

The study of how environmental factors influence the expression of genes without altering the DNA is known as

Accepted Answer

A)  epigenetics.
B)  nucleotide sequencing.
C)  microarray technology.
D)  epidemiological consequences.E) All of the above
F) A) and D)

Question 13

The function of a protease is to

Accepted Answer

A)  hydrolyze proteins.
B)  synthesize proteins.
C)  hydrolyze ribosomes.
D)  synthesize ribosomes.E) None of the above
F) B) and C)

Question 14

All of the following are characteristics of protein-energy malnutrition except

Accepted Answer

A)  it is found in hospitalized adults.
B)  it is found in elderly living alone.
C)  it almost always exhibits overt signs.
D)  it is common in people with anorexia nervosa.E) A) and B)
F) B) and C)

Question 15

The study of how food interacts with genes is known as

Accepted Answer

A)  nutritional genomics.
B)  chromosomals.
C)  nucleotide expression.
D)  mutagenic expression.E) A) and B)
F) B) and D)

Question 16

Which of the following describes a process in protein synthesis?

Accepted Answer

A)  The code to make a protein is carried by a strand of messenger RNA
B)  The final step in completing the protein is carried out in the mitochondria
C)  The function of transfer RNA is to assist in absorption of amino acids into the cell
D)  The DNA binds to ribosomes and directs uptake of specific amino acids to form the peptide chainE) None of the above
F) B) and C)

Question 17

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) None of the above

Question 18

Which of the following is characteristic of sickle-cell anemia?

Accepted Answer

A)  The disorder can be serious but not fatal
B)  The disorder leads to depression of energy expenditure
C)  The abnormal structure of the hemoglobin alters the shape of the red blood cell
D)  The hemoglobin amino acid sequence is abnormal in all four of the polypeptide chainsE) None of the above
F) C) and D)

Question 19

Which of the following may be used to determine protein utilization?

Accepted Answer

A)  Calorimetry
B)  Nitrogen balance
C)  Amino acid pool
D)  Supplementary valueE) A) and C)
F) C) and D)

Question 20

In relation to the range of protein intake as a percentage of energy intake, what would be the highest safe level of protein intake for a 60-kg adult ingesting 2500 kcalories?

Accepted Answer

A)  48 g
B)  96 g
C)  120 g
D)  219 gE) B) and C)
F) A) and C)

Exam 6: Protein: Amino Acids

How do sodium and potassium travel into and out of cells?

Correct AnswerverifiedShow Answer

Which of the following may be used to determine protein utilization?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following animal-derived proteins is classified as a poor-quality protein?

Correct AnswerverifiedShow Answer

Chronic protein-energy malnutrition in children is characterized by

Correct AnswerverifiedShow Answer

Your friend Jill has just joined her community college soccer team.How much protein should she consume each day?

Correct AnswerverifiedShow Answer

After digestion of proteins, what products are absorbed into the circulation?

Correct AnswerverifiedShow Answer

All of the following are characteristics of protein-energy malnutrition except

Correct AnswerverifiedShow Answer

Approximately how many different amino acids are used in the synthesis of body proteins?

Correct AnswerverifiedShow Answer

What is the process whereby an amino group is combined with a keto acid to form an amino acid?

Correct AnswerverifiedShow Answer

The study of how food interacts with genes is known as

Correct AnswerverifiedShow Answer

The study of how environmental factors influence the expression of genes without altering the DNA is known as

Correct AnswerverifiedShow Answer

Which of the following is characteristic of sickle-cell anemia?

Correct AnswerverifiedShow Answer

What is the name of the inactive form of the protein-splitting enzyme in the stomach?

Correct AnswerverifiedShow Answer

In relation to the range of protein intake as a percentage of energy intake, what would be the highest safe level of protein intake for a 60-kg adult ingesting 2500 kcalories?

Correct AnswerverifiedShow Answer

The function of a protease is to

Correct AnswerverifiedShow Answer

Protein-hydrolyzing enzymes are commonly known as

Correct AnswerverifiedShow Answer

Which of the following describes a process in protein synthesis?

Correct AnswerverifiedShow Answer

Excessive amounts of homocysteine in the blood are thought to increase the risk for

Correct AnswerverifiedShow Answer

What is complementary protein nutrition?

Correct AnswerverifiedShow Answer

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