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Per NCERT, in human digestion, what is the role of HCl (hydrochloric acid) in the stomach?
ANeutralises stomach contents
BMakes the medium acidic so that pepsin (a protein-digesting enzyme) can function; also kills bacteria in food
CDigests fats directly
DStores food
Answer & Solution
Correct answer: B. Makes the medium acidic so that pepsin (a protein-digesting enzyme) can function; also kills bacteria in food
Per NCERT §5.2.4, stomach HCl activates pepsin + kills bacteria. The other options misstate.
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