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In Krebs cycle FAD participates as electron acceptor during the conversion of

1. succinyl CoA to Succinic acid
2. alfa keto glutarate to Succinyl CoA
3. succinic acid to Fumaric acid
4. fumaric acid to Malic acid

Correct answer: succinic acid to Fumaric acid

Solution

In the Krebs cycle, FAD acts as the electron acceptor when succinate is oxidized to fumarate. This reaction is catalyzed by succinate dehydrogenase and produces FADH2.

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