Assertion :Gateway reaction of respiration is oxidative decarboxylation of pyruvate. Reason: The reaction allows the product to enter the mitochondria.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Gateway reaction is also called as link reaction or transition reaction. It is the linking reaction between glycolysis and TCA cycle. In this reaction, pyruvate is converted into acetyl Co-A and carbon dioxide is liberated. It is called as oxidative decarboxylation. It occurs in the presence of enzyme pyruvate dehydrogenase. Acetyl Co-A thus produced enters the TCA cycle which takes place in the mitochondria. However, in the given question, reason is not correct explanation for the assertion.
Thus, the correct answer is option B.

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Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

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Reason (R) We cannot determine order from balanced chemical equation.

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(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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