In the electron transport chain, energy for the synthesis of ATP is provided by the
A) splitting of oxygen molecules.
B) breaking of the covalent bonds in glucose.
C) movement of hydrogen ions through channels in the respiratory enzymes.
D) combination of two atoms of hydrogen and one atom of oxygen to form water.
E) oxidation of acetyl CoA.

Question

Quizplus · Accepted Answer

The movement of hydrogen ions through channels in the respiratory enzymes provides the energy for the synthesis of ATP in the electron transport chain. This movement of hydrogen ions generates a concentration gradient, which is used by ATP synthase to produce ATP. The other options mentioned (A, B, D, and E) are not directly involved in providing energy for ATP synthesis in the electron transport chain.

In the Electron Transport Chain, Energy for the Synthesis of ATP