Question

For each FADH2 that supplies electrons to the electron transport system, ________ ATP(s) is/are synthesized. For each NADH H that supplies electrons to the electron transport system, ________ ATP(s) is/are synthesized.

Answer 1

Answer: 2; 3

For each FADH2 that supplies electrons to the electron transport system, 2ATPs are synthesized. For each NADH that supplies electrons to the electron transport system, 3 ATPs are synthesized.

Explanation:

Both FADH2 and NADH are you reducing equivalents in that they give off electron in terms of hydrogen atom or a hydride ion.

Thus, in the inner membrane of the mitochondria where electron transport occurs, FADH2 gives off its hydride ion yielding 2 ATP molecules; while NADH gives off its hydride ions to yield 3 ATP molecules