Question

How is ATP produced in the electron transport chain?

Answer 1

Oxidative phosphorylation:

1. The process from which electron ATP is formed inside a cell is known as oxidative phosphorylation.
2. The process involves redox reactions to develop a proton gradient across the inner mitochondrial membrane and matrix.
3. The electrons are carried by reduced molecules like FADH₂, NADH₂, etc.
4. The electrons are passed across various electron complexes in the electron transport system to synthesize ATP.
5. In one molecule of NADH₂, three ATPs are formed and two ATPs are formed from one molecule of FADH_2, hence converting NADH to ATP.
6. This stage of the electron transport chain produces the most energy and occurs in mitochondria.