NEET Botany Light Reaction MCQ Question
During the light reaction of photosynthesis, ATP synthase uses a proton gradient to synthesize ATP. If the proton concentration inside the thylakoid is 100 mM and in the stroma is 1 mM, what is the approximate fold increase in proton concentration inside the thylakoid as compared to the stroma?
100-fold
10-fold
50-fold
5-fold
Correct Answer
Detailed Explanation
The proton concentration inside the thylakoid (100 mM) compared to the stroma (1 mM) represents a 100-fold increase. This gradient is essential for ATP synthesis via ATP synthase, as explained in the NCERT context.
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