Question

Where is electron transport system operative in mitochondria? Explain the system highlighting the role of oxygen.

Answer 1

The electron transport chain is a series of electron transporters embedded in the inner mitochondrial membrane that shuttles electrons from NADH and FADH2 to molecular oxygen. In the process, protons are pumped from the mitochondrial matrix to the intermembrane space, and oxygen is reduced to form water.

Role of oxygen in the terminal stage of ETS : It acts as the final hydrogen acceptor; removes hydrogen from the process and drives the whole process.