Several processes that occur along the mitochondrial electron
transport chain are required to generate a proton gradient. Which
of these processes directly involves a proton pump? A-The movement
of H+ through cytochrome oxidase. B-The movement of H+ through ATP
Synthase. C-The oxidation of NADH to NAD+ + H+ + 2e-. D-The
oxidation of FADH2 to FAD + 2H+ + 2e-. The reduction of O2 to H2O
in the mitochondrial matrix.