Question

Stage 1 of oxidative phosphorylation requires the movement of electrons along the

electron-transport chain coupled to the pumping of protons into the intermembrane space.
What is the final result of these electron transfers?
(a) OH- is oxidized to O2
(b) pyruvate is oxidized to CO2
(c) O2 is reduced to H2O
(d) H- is converted to H2

Answer 1

The final result of the electron transfers in stage 1 of oxidative phosphorylation is the reduction of O2 to H2O.

Step-by-step explanation:

The final result of the electron transfers in stage 1 of oxidative phosphorylation is option (c) O2 is reduced to H2O. During the electron transport chain, electrons are passed from NADH and FADH2 to a series of enzyme complexes located in the inner mitochondrial membrane. This process generates a proton gradient, which is used by ATP synthase to produce ATP. At the end of the electron transport chain, oxygen accepts the electrons and combines with protons to form water.