Question

1 NADH molecule gives ___ ATP molecules and 1 $FAD{H}_2$ molecule gives ___ ATP molecules.

• A. 2,2
• B. 3,2
• C. 2,3
• D. 4,2

Answer 1

The correct option is B 3,2

Each NADH gives 3 molecules of ATP and each $FAD{H}_2$ gives 2 molecules of ATP. The energy released in the cellular respiration process is expressed in terms of number of ATP molecules released and hence we need these conversion factors.