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Why are the roles of mouth and stomach different in human digestion?

Answer and explanation

Correct answer: The mouth starts starch digestion and the stomach helps protein digestion

Different digestive organs provide different enzymes and chemical conditions. In the mouth, salivary amylase begins the digestion of starch in a nearly neutral medium. In the stomach, hydrochloric acid creates an acidic environment and activates pepsin, which begins protein digestion. Therefore option A correctly matches the two roles. The other options confuse digestion with excretion, respiration, circulation, or absorption.

Related tags

Human DigestionMouthStomachLife ProcessesWorld Of LivingScienceClass 10 Mcq

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