Question: Which of the following is the best description of nutrients provided by animal protein sources: in fiber; in saturated fat and cholesterol; in readily absorbed forms of iron, zinc, and calcium?

a) High; high; high

b) Low; low; low

c) High; high; low

d) Low; high; high

Answer: D

Question: Plant foods generally are excellent sources of

a) fiber.

b) phytochemicals.

c) unsaturated fats.

d) all of these choices.

Answer: D

Question: If the diet is deficient in one or more of the _____amino acids, the body must break down existing proteins to provide the amino acids.

a) nonessential

b) essential

c) dispensable

d) dipeptide

Answer: B

Question: The order and chemical properties of _____ in a polypeptide chain determine how the polypeptide fold, and thus the shape of the molecule formed.

a) amino acids

b) carboxylic acids

c) lipoproteins

d) water molecules

Answer: A

Question: When salivary amylase enters the stomach, the acid causes the structure of this enzyme to change so that it is no longer able to function. This change in structure is called

a) deamination.

b) deformation.

c) denaturation.

d) deactivation.

Answer: C

Question: Most protein digestion occurs in the

a) mouth.

b) pancreas.

c) small intestine.

d) stomach

Answer: C

Question: The role of hydrochloric acid in protein digestion is to

a) break down polypeptide chains.

b) denature the protein.

c) slow peristalsis.

d) stimulate production of digestive enzyme in pancreas.

Answer: B

Question: Select the letter that indicates where transport proteins move the products of protein digestion into the mucosal cell.

a) mouth

b)stomach

c) pancreas

d) small intestines

Answer: D

Question: Select the letter that indicates where protein-digesting enzymes are released from this organ, which aids brush border enzymes to breakdown protein

a) mouth

b)stomach

c) pancreas

d) small intestines

Answer: C

Question:

Answer: D