Multiple choice

Pepsinogen is activated by

  1. bile

  2. bicarbonate

  3. HCL

  4. parietal cells

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pepsinogen is an inactive zymogen. When it encounters the highly acidic environment created by hydrochloric acid (HCl) in the stomach, it is cleaved into its active form, pepsin.