Which of the following substances is a precursor to an enzyme that functions in the stomach?
A)pepsinogen
B)HCl
C) intrinsic factor
D) gastrin

Question

Quizplus · Accepted Answer

Pepsinogen is a precursor to the digestive enzyme pepsin, which functions in the stomach to break down proteins. HCl is a component of gastric juice that helps to activate pepsinogen and also kills bacteria. Intrinsic factor is a molecule secreted by stomach cells that is necessary for absorption of vitamin B12. Gastrin is a hormone that stimulates the release of gastric acid and other digestive enzymes. While gastrin indirectly promotes the functions of the stomach, it is not a precursor to any specific enzyme.

Which of the Following Substances Is a Precursor to an Enzyme