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Bad White [126]
4 years ago
10

Where are proteins first digested chemically? What enzyme initiates protein digestion? How is this enzyme activated?

Medicine
1 answer:
quester [9]4 years ago
6 0

Answer:

Stomach

Pepsin

Explanation:

Protein first digested chemically in the stomach. The peptic or chief cells of the gastric glands secrete the proenzyme pepsinogen. The proenzyme pepsinogen gets activated by the hydrochloric acid. In the presence of hydrochloric acid (HCL), it is activated into the pepsin, an active enzyme. Pepsin is functional only in the  in acidic medium. In the stomach the medium is acidic, thus pepsin converts proteins into proteoses and peptones (peptides).

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