Question 1

A(n) ____________ bond links one amino acid to the next.

Accepted Answer

A)  disulfide
B)  ionic
C)  glycosidic
D)  peptideE) None of the above
F) A) and C)

Question 2

Protein requirements are in part based on a person's:

Accepted Answer

A)  body weight.
B)  age.
C)  health status.
D)  All of these are correct.E) B) and C)
F) None of the above

Question 3

Regular soy consumption may help:

Accepted Answer

A)  increase fertility.
B)  lower blood LDL cholesterol levels.
C)  improve athletic performance.
D)  reduce muscle fatigue.E) C) and D)
F) B) and C)

Question 4

A pattern of food intake that eliminates all animal products is called:

Accepted Answer

A)  lacto-ovo vegetarian.
B)  vegan vegetarian.
C)  phyto vegetarian.
D)  pesco vegetarian.E) A) and D)
F) A) and C)

Question 5

Which group has the highest protein requirement (per unit of body weight) ?

Accepted Answer

A)  Infants
B)  Adults who exercise regularly
C)  Adult women
D)  Elderly menE) All of the above
F) A) and C)

Question 6

The waste product resulting from the deamination of a protein is:

Accepted Answer

A)  ketone bodies.
B)  urea.
C)  lactate.
D)  CO₂.E) None of the above
F) C) and D)

Question 7

All of the following components are always associated with an amino acid EXCEPT:

Accepted Answer

A)  an amino group.
B)  an acid group.
C)  a phosphate group.
D)  a side chain (functional group) .E) A) and B)
F) A) and C)

Question 8

The amino acid pool refers to amino acids:

Accepted Answer

A)  which are soluble in bodily fluids.
B)  present in body tissues and fluids and that are available for protein synthesis or to generate ATP.
C)  which are used by the body for building muscle tissue.
D)  which the body is not able to make and must be supplied by the diet.E) B) and C)
F) A) and B)

Question 9

Kwashiorkor is best characterized by:

Accepted Answer

A)  severe protein deficiency in young children.
B)  increased susceptibility to food allergies in adults.
C)  misshapen (sickle-shaped) red blood cells.
D)  the inability to digest proteins from soy and other plant proteins.E) All of the above
F) C) and D)

Question 10

The enzymes trypsin and chymotrypsin:

Accepted Answer

A)  break large polypeptides into smaller peptides.
B)  are needed to denature proteins.
C)  rearrange the sequence of amino acids in a polypeptide.
D)  are needed to make nonessential amino acids.E) A) and B)
F) A) and C)

Question 11

Protein complementation is a technique which:

Accepted Answer

A)  increases the biological value of a protein.
B)  increases the nitrogen content of dietary protein sources.
C)  minimizes nitrogen loss in the urine.
D)  combines proteins from different sources so that essential amino acids requirements are met.E) A) and C)
F) A) and B)

Question 12

Food allergies can result when a protein in the diet:

Accepted Answer

A)  is not absorbed and is eliminated in the feces.
B)  is filtered out of the blood and into the urine.
C)  is absorbed without being completely digested.
D)  provides amino acids that are not normally found in the human body.E) A) and D)
F) C) and D)

Question 13

Transamination refers to:

Accepted Answer

A)  the transfer of an amino group from one amino acid to a carbon-containing molecule to form a nonessential amino acid.
B)  the removal of the amine group from an amino acid.
C)  the interaction of amino acid side chains important for protein folding.
D)  the formation of a peptide bond between adjacent amino acids.E) B) and C)
F) A) and B)

Question 14

Which statement about amino acid absorption is FALSE?

Accepted Answer

A)  Absorption of larger polypeptides occurs commonly in healthy adults.
B)  Groups of similar amino acids share the same transport system.
C)  If one amino acid is supplemented,it can slow the absorption of other amino acids.
D)  Dipeptides and tripeptides are broken down to individual amino acids before leaving the mucosal cells of the small intestine.E) A) and B)
F) A) and C)

Question 15

In the US,most dietary protein comes from:

Accepted Answer

A)  animal sources.
B)  beans.
C)  nuts.
D)  vegetables.E) A) and D)
F) A) and B)

Question 16

Vegan vegetarians may not get enough of which nutrient(s) ?

Accepted Answer

A)  Iron and zinc
B)  Vitamin B₁₂
C)  Calcium and vitamin D
D)  All these nutrients could be lowE) None of the above
F) A) and D)

Question 17

Individuals with the genetic disorder phenylketonuria (PKU) should limit their intake of foods containing:

Accepted Answer

A)  carbohydrate.
B)  iron.
C)  monosodium glutamate.
D)  aspartame.E) All of the above
F) None of the above

Question 18

The specific sequence of amino acids in a polypeptide chain is determined by

Accepted Answer

A)  the types of food proteins that a person consumes.
B)  DNA found in the nucleus of cells.
C)  GI tract peptidases.
D)  random interactions between free amino acids in the cytoplasm of cells.E) C) and D)
F) All of the above

Question 19

Which of the following is a physical characteristic associated with Kwashiorkor?

Accepted Answer

A)  Bloated abdomen
B)  Excess sweating
C)  Tall stature
D)  Hypertrophic (enlarged) leg musclesE) B) and D)
F) C) and D)

Question 20

Heating a protein causes:

Accepted Answer

A)  transamination.
B)  deamination.
C)  denaturation.
D)  all of these.E) A) and B)
F) A) and C)

Exam 6: Proteins and Amino Acids

The specific sequence of amino acids in a polypeptide chain is determined by

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In the US,most dietary protein comes from:

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All of the following components are always associated with an amino acid EXCEPT:

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Heating a protein causes:

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A pattern of food intake that eliminates all animal products is called:

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Food allergies can result when a protein in the diet:

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Transamination refers to:

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Regular soy consumption may help:

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Individuals with the genetic disorder phenylketonuria (PKU) should limit their intake of foods containing:

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Kwashiorkor is best characterized by:

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Protein complementation is a technique which:

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Vegan vegetarians may not get enough of which nutrient(s) ?

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Which of the following is a physical characteristic associated with Kwashiorkor?

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The enzymes trypsin and chymotrypsin:

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The amino acid pool refers to amino acids:

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Which statement about amino acid absorption is FALSE?

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Protein requirements are in part based on a person's:

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Which group has the highest protein requirement (per unit of body weight) ?

Correct AnswerverifiedShow Answer

The waste product resulting from the deamination of a protein is:

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A(n) ____________ bond links one amino acid to the next.

Correct AnswerverifiedShow Answer

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