BotanyThe reasons for establishment of difference in the concentration of protons between stroma and lumen of thylakoid across the thylakoid membrane in the light reaction of photosynthesis of higher plants is/are

The reasons for establishment of difference in the concentration of protons between stroma and lumen of thylakoid across the thylakoid membrane in the light reaction of photosynthesis of higher plants is/are

  1. A

    photolysis of water only

  2. B

    photolysis of water and movement of protons from stroma to lumen through proton pump

  3. C

    photolysis of water, usage of protons of stroma for NADPH formation and movement of protons from stroma to lumen through proton pump.

  4. D

    Movement of protons from stroma to lumen only

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    Solution:

    Proton gradient is established across the thylakoid membrane of chloroplast between stroma and lumen is due to photolysis of water in the lumen, usage of protons of stroma for NADPH formation and movement of protons from stroma to lumen through proton pump.

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