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Question

The active form of pepsinogen is

A
pepsin
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B
trypsinogen
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C
procarboxypeptidase
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D
chyme
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Solution

The correct option is A pepsin
Pepsinogen is an inactive enzyme secreted by the peptic or chief cells of the stomach. This inative enzyme or the proenzyme is converted into its active form, pepsin, upon exposure to hydrochloric acid (HCl) secreted by the parietal or oxyntic cells of the stomach.

Trypsinogen and procarboxypeptidase are the inactive enzymes of the pancreatic juice.

Chyme is the semi-fluid mass of partially digested food in the stomach.

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