Question

Mitochondrial electron transport chain is

Answer 1

Oxidative phosphorylation

Oxidative phosphorylation is a process in which ATP is formed during respiration.

The end product of oxidative phosphorylation is ATP.

The transfer of electrons from NADH and ${\text{FADH}}_2$ to ${\text{O}}_2$ occurs in the electron transport chain.

As the electrons move through different complexes, they release energy. This energy is utilized to pump protons from the matrix to the intermembrane space due to which a proton gradient is generated.

This increases the concentration of protons in the intermembrane space of mitochondria and creates a driving force.

Later protons move through complex $V$ (ATP synthase) and there is synthesis of ATP.

This synthesis of ATP is called oxidative phosphorylation.