NTA Abhyas NEET2020BotanyRespiration in PlantsPractice
The chemiosmotic hypothesis suggests that the ATP are produced on the inner membrane of mitochondria due to:
Options
- AF 1 particles present between the inner and outer membrane of mitochondria.
- BInvolvement of oxygen as the electron acceptor.
- CCreation of a proton electrochemical gradient across inner membrane of mitochondria.
- DEnzymes present in the mitochondrial matrix.
Correct answer
C. Creation of a proton electrochemical gradient across inner membrane of mitochondria.
Step-by-step solution
The chemiosmotic hypothesis put forth by Sir Peter Mitchell suggests that the proton gradient created across the inner membrane of mitochondria is responsible for the pumping of H + ions into the mitochondrial matrix. This energy produced by the proton pump is harnessed by the catalytic subunit of ATPase enzyme complex to produce ATP. A similar mechanism is seen in the thylakoid membrane of chloroplast during energy production in the light reaction of photosynthesis.