The immediate energy source that drives ATP synthesis by ATP synthase during oxidative phosphorylation is the
A) oxidation of glucose and other organic compounds.
B) flow of electrons down the electron transport chain.
C) affinity of oxygen for electrons.
D) H+ movement down its concentration gradient.
E) transfer of phosphate to ADP.

Question

Quizplus · Accepted Answer

The immediate energy source that drives ATP synthesis by ATP synthase during oxidative phosphorylation is the movement of H+ down its concentration gradient. This movement creates a proton motive force that drives the synthesis of ATP.

The Immediate Energy Source That Drives ATP Synthesis by ATP