Approximately how much more free energy is supplied to the electron transport chain by nadh than by fadh2?

Answer;

8 kilo calories/mole.

Approximately 8 kilo calories/mole more free energy is supplied to the electron transport chain by NADH than by FADH2.

Explanation;

-An NADH molecule produces 3 ATP during the ETC (Electron Transport Chain) with oxidative phosphorylation because NADH gives up its electron to Complex I, which is at a higher energy level than the other Complexes.

-An FADH2 molecule produces 2 ATP during the ETC because it gives up its electron to Complex II, bypassing Complex I.

some scientists like gregory adcock agree with thorne's theory of regional continuity.

others, like chris stringer and ian tattersall, believe thorne's results may be contaminated or misinterpreted.

actually the answer is c