The synthesis of ATP by oxidative phosphorylation, using the energy released by movement of protons across the membrane down their electrochemical gradient, is an example of
A) active transport.
B) an endergonic reaction coupled to an exergonic reaction.
C) a redox reaction.
D) allosteric regulation.

Question

Quizplus · Accepted Answer

Oxidative phosphorylation involves the coupling of an exergonic reaction (electron transport chain) to an endergonic reaction (synthesis of ATP). This process is driven by the proton motive force, which is generated by the movement of protons across the membrane down their electrochemical gradient.

The Synthesis of ATP by Oxidative Phosphorylation, Using the Energy