NEET 2023
- Exam
- NEET
- Year
- 2023
- Subject
- Botany
- Chapter
- Photosynthesis in Higher Plants
NEET 2023 · Botany · Photosynthesis in Higher Plants
Which of the following combinations is required for chemiosmosis?
Which of the following combinations is required for chemiosmosis?
Options
- Aproton pump, electron gradient, NADP synthase
- Bmembrane, proton pump, proton gradient, ATP synthase
- Cmembrane, proton pump, proton gradient, NADP synthase
- Dproton pump, electron gradient, ATP synthase
Correct answer
B. membrane, proton pump, proton gradient, ATP synthase
Step-by-step solution
ATP synthesis according to chemiosmosis hypothesis takes place in both chloroplasts (photophosphorylation) and mitochondria (oxidative phosphorylation). Both these processes need the involvement of:
- A membrane (thylakoid membrane or mitochondrial membrane, respectively).
- Proton pumps to maintain the pH.
- Proton gradient to move the proton across the membrane.
- ATP synthase enzyme which is present in F0-F1 particles in mitochondria or CF0-CF1 particles in plastids.