MDCAT Biology MCQ #3285

The enzyme pepsin, which functions in the acidic environment of the stomach, has an optimum pH value of:

MDCAT Biology MCQ #3285

  1. Question 1

    Q1. The enzyme pepsin, which functions in the acidic environment of the stomach, has an optimum pH value of:

    • A) 7.0
    • B) 2.0
    • C) 8.0
    • D) 4.5

    Answer: 2.0

    Explanation: Pepsin requires a highly acidic pH of 2.0; a neutral pH of 7.0 would denature the enzyme and stop its activity.