Give graphic representation of cyclic photophosphorylation.

1.	Give graphic representation of cyclic photophosphorylation.
Answer» Cyclic photophosphorylation: a. Illumination of photosystem-I causes electrons to move continuously out of the reaction center of photosystem-I and back to it. b. The cyclic electron-flow is accompanied by the photophosphorylation of ADP to yield ATP. This is termed as Cyclic photophosphorylation. c. Since this process involves only pigment system I, photolysis of water and consequent evolution of oxygen does not take place.

Answer»

Cyclic photophosphorylation:

a. Illumination of photosystem-I causes electrons to move continuously out of the reaction center of photosystem-I and back to it.

b. The cyclic electron-flow is accompanied by the photophosphorylation of ADP to yield ATP. This is termed as Cyclic photophosphorylation.

c. Since this process involves only pigment system I, photolysis of water and consequent evolution of oxygen does not take place.

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Give graphic representation of cyclic photophosphorylation.

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