Multiple choice

Pepsin differs from trypsin in that it digests

  1. protein in alkaline medium in stomach

  2. protein in acidic medium in duodenum

  3. protein in acidic medium in stomach

  4. protein in alkaline medium in duodenum

  5. None of the above

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

Pepsin functions in the stomach's acidic environment (pH 1.5-2), where it begins protein digestion. Trypsin operates in the alkaline duodenum (pH 7.5-8) and requires different conditions. Option A incorrectly states pepsin works in alkaline medium, while options B and D place these enzymes in the wrong locations.

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