Question

In which of the conversions, NADH + H⁺ is not formed?

Options

• Malic acid into oxaloacetic acid.

• α - Ketoglutaric acid into succinyl-Co-A.

• Iso-citric acid into oxalosuccinic acid.

• Succinic acid into fumaric acid.

Answer 1

Succinic acid into fumaric acid.

Explanation:

In the presence of the co-enzyme FAD, succinic acid is oxidised to 4C fumaric acid, which is then reduced to FADH₂.