Energy from electron transport reactions is stored as a ________ gradient that is higher in the intermembrane space than in the mitochondrial matrix.
A)electron
B)ATP
C)proton
D)NADPH

Question

Quizplus · Accepted Answer

Electrons passing through the electron transport chain (ETC) pump protons (H+) from the mitochondrial matrix to the intermembrane space, creating a concentration gradient of protons. This stored energy in the form of the proton gradient generates ATP through the ATP synthase enzyme. Therefore, the correct choice is C, proton.

Energy from Electron Transport Reactions Is Stored as a ________