How many ATP molecules are produced for each NADH + H⁺ through the electron transport route that operates in the heart and the liver?

Question

Quizplus · Accepted Answer

In both the heart and the liver, the electron transport chain results in the production of approximately 2.5 ATP molecules per NADH + H+ that is oxidized. This is because electrons from NADH enter the electron transport chain at Complex I, while electrons from FADH2 enter at Complex II. Electrons from NADH generate more ATP because they enter the electron transport chain at a higher energy level, allowing for the pumping of more protons across the inner mitochondrial membrane and the generation of a greater proton gradient, which ultimately drives ATP synthesis. Since the question only asks about NADH + H+, the answer is 2.5.

How Many ATP Molecules Are Produced for Each NADH