If you put the following events in the order they occur in the human digestive system, the third event in the series would be:

a. Cells in gastric pirs secrete protons
b. Pepsin activates pepsinogen
c. HCl activates pepsinogegn
d. Partially digested food enters the small intestine


Answer: b. Pepsin activates pepsinogen

Biology & Microbiology

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