Q.

The site of high proton concentration in a chloroplast during photosynthesis is

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By Expert Faculty of Sri Chaitanya

Stroma

Periplastidial space

Lumen

Matrix

answer is 3.

(Detailed Solution Below)

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Detailed Solution

During photosynthesis, there is high concentration of protons in the lumen of thylakoids of chloroplasts because there is pumping of more protons from stroma to lumen due to Q cycle operation and photolysis of water in lumen.

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