Question

What converts trypsinogen into active trypsin in the stomach?

A. trypsin activating enzyme
B. Low pH produced by the secretion of HCl
C. gastrin released by the stomach
D. the release of CCK by the small intestine

Answer 1

Trypsinogen is converted into active trypsin in the stomach by the enzyme enterokinase, secreted by the intestinal cells.

Step-by-step explanation:

The proteolytic enzyme trypsinogen is converted into the active enzyme trypsin in the stomach by an enzyme called enterokinase, which is secreted by the intestinal cells. Enterokinase removes a hexapeptide from the N-terminal end of trypsinogen, resulting in the formation of trypsin. Trypsin is then responsible for activating the remaining trypsinogen as well as other enzymes involved in protein digestion.