Question

Which of the following is coenzyme?

• A. NAD
• B. FAD
• C. Both (A) and (B)
• D. None of the above

Answer 1

The correct option is C Both (A) and (B)

Coenzyme is an organic cofactor for an enzyme that mostly serves in the transfer of some component during the reaction, for example, transfer of electrons. NAD serves as water soluble coenzyme and transfers electron by reversible reduction of its nicotinamide ring. Likewise, reversible reduction of the isoalloxazine ring of FAD allows electron transfer. The correct answer is C.