NEET2016BotanyPhotosynthesis in Higher PlantsActual
The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because
Options
- Aa proton gradient forms across the inner mitochondrial membrane
- Bthere is a change in the permeability of the inner mitochondrial membrane towards adenosine diphosphate (ADP)
- Chigh energy bonds are formed in mitochondrial proteins
- DADP is pumped out of the matrix into the intermembrane space.
Correct answer
A. a proton gradient forms across the inner mitochondrial membrane
Step-by-step solution
The chemiosmotic coupling hypothesis of oxidative phosphorylation proposed by Mitchell, explains the process of ATP formation and states that it is linked to development of a proton gradient across the mitochondrial membrane. ATP synthase, required for ATP synthesis is located in F ₁ particles present in the inner mitochondrial membrane and becomes active only when there is high concentration of proton on F ₀ side as compared to F ₁ side. The flow of proton through F ₀ channel induces F ₁ particle to function as AT