In mitochondrial electron transport first receptor of electron:

Cyto

a_{3}

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Flavo protein

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F e - S

protein

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Plastic quinone A and B

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Solution

The correct option is C $F e - S$ protein
An electron transport chain (ETC) is a series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions. There are four complexes in the electron transport chain and the transport of electron from NADH first occurs into the complex I or NADH coenzyme Q reductase. Complex Ic consists of a Fe-S cluster and is the first electron acceptor in the chain. So, the correct option is 'Fe−S protein'.

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