MDCAT Biology MCQ #2930

The pH of the stomach is lowered by the secretion of

MDCAT Biology MCQ #2930

  1. Question 1

    Q1. The pH of the stomach is lowered by the secretion of

    • A) Pepsinogen
    • B) Gastrin
    • C) Hydrochloric acid
    • D) Mucus

    Answer: Hydrochloric acid

    Explanation: Hydrochloric acid (HCl) secretion lowers the stomach pH, activating pepsinogen to pepsin.