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Assertion :In...

Question

Assertion :In electron transport system the electron are passed on to oxygen resulting in the formation of $H_{2} O$ Reason: Oxygen is the ultimate acceptor of electrons

A

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

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B

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

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C

Assertion is correct but Reason is incorrect

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D

Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Oxygen is the terminal electron acceptor of respiratory chain. In electron transport system, electrons are passed on from one carrier to another and ultimately to oxygen and at the end of this chain, one molecule of water is produced as:
$\frac{1}{2} O_{2} + 2 H^{+} + 2 e^{-} \to H_{2} O$

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