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) H+ concentration gradient across the membrane holding ATPsynthase
D) transfer of phosphate to ADP

Question

Quizplus · Accepted Answer

The immediate energy source for ATP synthesis by ATP synthase during oxidative phosphorylation is the H+ concentration gradient across the membrane. This gradient, also known as the proton motive force, is generated by the electron transport chain and drives the synthesis of ATP as protons flow back across the membrane through ATP synthase.

The Immediate Energy Source That Drives ATP Synthesis by ATP