Question

During oxidative phosphorylation, proton return to

• A. Matrix from outside
• B. Outside from matrix
• C. In both directiion
• D. Mitochondria to cytoplasm

Answer 1

The correct option is A Matrix from outside

Oxidative phosphorylation is the process of formation of ATP (energy) molecules inside the plant and animal cells. It takes place inside the mitochondria. During the oxidative phosphorylation, electrons flow from NADH or FADH to O₂ through the four different type complexes found in the inner mitochondrial membrane, which leads the pumping of the proton from outside to the matrix.

So, the correct answer is ' Matrix from outside '