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प्रश्न
Where are proteins first digested in the alimentary canal?
विकल्प
small intestine
oesophagus
mouth
stomach
MCQ
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उत्तर
stomach
Explanation:
The chemical digestion of proteins initiates exclusively in the stomach. The inner lining of the stomach contains gastric glands that secrete hydrochloric acid (HCl) and an inactive enzyme called pepsinogen. The strongly acidic environment created by HCl activates pepsinogen to its active form, pepsin, which begins breaking down large protein chains into smaller fragments called peptones and peptides.
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