Digestion of Proteins

Question 1

DIGESTIVE ENDOPEPTIDASES in the stomach

Answer 1

pepsin (pepsinogen)

Question 2

DIGESTIVE ENDOPEPTIDASES in the pancreas

Answer 2

chymotrypsin (chymotrypsinogen)

trypsin (trypsinogen)

elastase (proelastase)

Question 3

mechanism of GI digestion of proteins

Answer 3

HCl (in the stomach) activates pepsinogen to pepsin

trypsinogen to trypsin

trypsin then activates all other pancreatic enyzymes

Question 4

enters into te amino acid pool

Answer 4

1. dietary amino acids
2. catabolism of proteins
3. synthesis of nonessential amino acids

Question 5

leaves the amino acid pool

Answer 5

1. synthesis of proteins
2. metabolic fuel
3. synthesis of nonproteic nitrogen compounds