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Question
Explain how during light reaction of photosynthesis, ATP synthesis is a chemiosmotic phenomenon.
Solution
The activity of ions across a semipermeable membrane and under an electronic gradient is called chemiosmotic movement. In ATP synthesis during light reaction of photosynthesis, movement of ions takes place across the thylakoid membrane which is a semi-permeable membrane. Moreover, ions are pumped by a proton pump utilizing a proton gradient; and eventually, ATP is synthesized. Due to these characteristics, ATP synthesis during the light reaction is called a chemiosmotic phenomenon.
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