Question

$FAD$ participates in Krebs' cycle as electron acceptor during conversion of

• A. succinyl $CoA$ to succinic acid
• B. $\alpha$-ketoglutarate to succinyl $CoA$
• C. succinic acid to fumaric acid
• D. fumaric acid to malic acid

Answer 1

Answer: (C)

succinic acid to fumaric acid

Answer 2

Succinate undergoes dehydrogenation to form fumarate with the help of a membrane based enzyme succinate dehydrogenase. $FADH_2$ (reduced flavin adenine dinucleotide) is produced.