11. The primary function of protein in the diet is to supply

a. energy for growth and development.

b. insulation for vital organs.

c. material for growth and maintenance.

d. all 20 amino acids for heart maintenance.

12. Protein plays an important role in the body

a. as the first source of energy fuel.

b. in the conversion of glucose to glycogen for storage.

c. as a coenzyme needed for energy utilization.

d. in defense against disease and infection.

13. After a piece of grilled chicken is digested by the mouth and stomach, it eventually reaches the small intestine, where it is digested by the following enzymes secreted by the pancreas:

a. chymotrypsin, trypsin, and carboxypeptidase

b. chymotrypsin, pepsin, and trypsin

c. sucrase, pepsin, and carboxypeptidase

d. lactase, chymotrypsin, and carboxypeptidase

14. Proteins are absorbed as

a. fatty acids.

b. disaccharides.

c. amino acids.

d. polypeptides.

15. Pepsinogen secreted by the gastric cells is converted into pepsin by

a. food in the stomach.

b. hydrochloric acid.

c. gastric lipase.

d. pancreatic lipase.

16. Protein catabolism is increased in conditions such as

a. pregnancy.

b. childhood.

c. puberty.

d. illness.

17. The phase of metabolism that makes growth and repair possible is

a. digestion.

b. catabolism.

c. anabolism.

d. homeostasis.

18. A gastric enzyme that coagulates the protein in milk and is produced by infants but not by adults is

a. hydrochloric acid.

b. pepsinogen.

c. trypsin.

d. rennin.

19. A protein-digesting enzyme found in the stomach rather than in pancreatic secretions is

a. trypsin.

b. pepsin.

c. chymotrypsin.

d. carboxypeptidase.

20. The enzyme trypsin is activated by the enzyme

a. zymogen.

b. bile.

c. gastrin.

d. enterokinase.