Which of the following of light reaction of photosynthesis is described as chemiosmosis.

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Movement of protons from lumen to stroma through CF₀

splitting of water and release of protons into lumen of thylakoid

Movement of protons from stroma to lumen through cytochrome b₆/f complex.

electron transport from water of lumen side of thylakoid membrane to NADP⁺ present towards stromal side of thylakoid membrane

answer is B.

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Detailed Solution

Chemiosmosis is facilitated diffusion of an ion or protons from a region of high concentration of protons to a region of low concentration of protons through a channel protein such as CF₀ of CF particle. This brings about breakage of ion or proton gradient and the energy is used for the formation of ATP from ADP and Pi.

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