In the stomach, X converts an inactive enzyme into Y. Identify X and Y.

X: Rennin; Y: HCl

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X: HCl; Y: Pepsin

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X: HCl; Y: Pepsinogen

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None of the above

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Solution

The correct option is B X: HCl; Y: Pepsin
X is HCl, which activates the inactive enzyme pepsinogen.
Y is the active enzyme pepsin, which acts on proteins to break them down into peptides.

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{log}_{10} \frac{x^{3} - y^{3}}{x^{3} + y^{3}} = 2

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Why are protein digesting enzymes in the stomach released as inactive enzymes.

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