NEET BIOLOGY

Detailed explanation-1: -Electron transport chain is the process which produces ATP in the final steps of cellular respiration, occurs in the inner mitochondrial membrane. The mitochondrion has an outer membrane and an inner membrane with folds called as cristae .

Detailed explanation-2: -Electron transport chain (ETC) occurs in the inner mitochondrial membrane, where the OXPHOS takes place through the action of ATP synthase, [37].

Detailed explanation-3: -The electron transport chain is a series of four protein complexes that couple redox reactions, creating an electrochemical gradient that leads to the creation of ATP in a complete system named oxidative phosphorylation. It occurs in mitochondria in both cellular respiration and photosynthesis.

Detailed explanation-4: -To increase the capacity of the mitochondrion to synthesize ATP, the inner membrane is folded to form cristae. These folds allow a much greater amount of electron transport chain enzymes and ATP synthase to be packed into the mitochondrion.

Detailed explanation-5: -The inner membrane (IM) has many folds, termed cristae, which increase the surface area available for mitochondrial respiration and are the site of electron transport and oxidative phosphorylation (OXPHOS).