In Kreb’s cycle the FAD participates as an electron acceptor during the conversion of
succinyl CoA to succinic acid.
alpha-ketoglutarate to succinyl CoA
fumaric acid to malic acid.
succinic acid to fumaric acid
FAD acts as electron acceptor during the conversion of succinic acid to fumaric acid by succinate dehydrogenase or complex II.