In the complete reactions of aerobic respiration,the energy for most of the ATP produced is provided by
A)transfer of electrons from organic molecules to acetyl CoA.
B)high-energy phosphate bonds from organic molecule intermediates in the citric acid cycle.
C)splitting water to produce oxygen.
D)a proton gradient across a membrane.

Question

Quizplus · Accepted Answer

In the process of oxidative phosphorylation, a proton gradient is established across the inner membrane of the mitochondria. This gradient is generated by the transfer of electrons from NADH and FADH2 to the electron transport chain, which pumps protons from the matrix to the intermembrane space. The flow of protons back through the ATP synthase enzyme generates ATP. This process provides the energy for most of the ATP produced in aerobic respiration.

In the Complete Reactions of Aerobic Respiration,the Energy for Most