In Cellular Respiration,the Energy for Most ATP Synthesis is Supplied

Question

In cellular respiration,the energy for most ATP synthesis is supplied by
A)high-energy phosphate bonds in organic molecules.
B)a proton gradient across a membrane.
C)converting oxygen to ATP.
D)transferring electrons from organic molecules to pyruvate.
E)generating carbon dioxide and oxygen in the electron transport chain.

Accepted Answer

The energy for most ATP synthesis in cellular respiration is supplied by a proton gradient across a membrane. This gradient is formed by the movement of protons (H+) across the inner mitochondrial membrane during electron transport. The flow of protons back across the membrane, through ATP synthase, provides the energy for ATP synthesis.