If by an unknown accident the acid-secreting cells of the stomach wall of an individual are damaged, digestion of which one of the following biomolecules will be affected to a greater extent?

Protein only

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Lipid

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Carbohydrate only

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Protein and Carbohydrate

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Solution

The correct option is A Protein only
Parietal cells are the acid secreting cells of the stomach wall. If by an unknown accident the parietal cells of an individual are damaged, digestion of proteins will be affected to a greater extent. This acid kills bacteria and also helps in digestion. The acid also provides optimal pH for the function of the digestive enzyme pepsin. So, if the acids are not secreted properly, the enzyme pepsin will not function properly and digestion of protein will be affected.
Thus, the correct answer is 'Protein only.'

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