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  4. Pepsinogen (inactive form) is converted into active form of enzyme pepsin with the help of which of the following compounds?

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Q. Pepsinogen (inactive form) is converted into active form of enzyme pepsin with the help of which of the following compounds?

Digestion and Absorption

Solution:

Proenzymes (inactive form of enzyme) or zymogens secreted by the chief cells or zymogenic cells of gastric glands are activated by the $HCl$ secreted by the oxyntic or parietal cells of the gastric glands. Thus, the inactive pepsinogen gets converted into its active form pepsin by the action of $HCl$.