Pepsinogen is an example of a proenzyme. This means it is
A. an inactive form an enzyme.
B. an enzyme needed for protein digestion.
C. a protease.
D. an enzyme that leads the way for a different enzyme to have activity.
Question 2
One of the first events that occurs in the stomach in response to the presence of food is the release of _____, a hormone that stimulates the stomach to produce gastric juices.
A. cholecystokinin
B. gastrin
C. secretin
D. insulin
