Question Detail
Question
Which enzyme activates pepsinogen, and what does pepsinogen become?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Hydrochloric acid (HCl) activates pepsinogen into pepsin. Pepsinogen is the inactive zymogen form; when exposed to the acidic environment of the stomach, it is cleaved to form active pepsin, which then begins protein digestion.
Hint
The same acid that kills bacteria also activates this protein-digesting enzyme.