NEETBotanyPhotosynthesis in Higher Plants
What happens to protons as they move through the ATP synthase channel?
Options
- AThey are used to synthesize NADPH
- BThey provide energy for the synthesis of ATP
- CThey are absorbed by chlorophyll
- DThey are released into the cytoplasm
Correct answer
B. They provide energy for the synthesis of ATP
Step-by-step solution
Chemiosmosis requires a membrane, a proton pump, a proton gradient and ATP synthase. Energy is used to pump protons across a membrane, to create a gradient or a high concentration of protons within the thylakoid lumen. ATP synthase has a channel that allows diffusion of protons back across the membrane; this releases enough energy to activate ATP synthase enzyme that catalyses the formation of ATP. Along with the NADPH produced by the movement of electrons, the ATP will be used immediately in the biosynthetic react