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Question

Pepsin differs from trypsin in that it digests

A
Protein in alkaline medium in stomach.
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B
Protein in acid medium in stomach.
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C
Protein in acid medium in duodenum.
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D
Protein in alkaline medium in duodenum.
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Solution

The correct option is B Protein in acid medium in stomach.
Pepsin is secreted from the gastric glands of stomach. It is secreted in inactive form called pepsinogen. It acts on protein and converts them into proteoses and peptones. It catalyses in acidic medium. Trypsin is secreted from the exocrine pancreas. It is secreted in inactive form called trypsinogen. It acts on proteoses and peptones and converts them into polypeptides in duodenum. It catalyses in alkaline medium.
Therefore, the correct answer is option B.

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