Which is not true regarding cyclic electron t | vedclass

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(D) In cyclic photophosphorylation,only $PS$ $I$ is involved. Electrons are circulated within the photosystem,and no external electron donor (like wat

Vedclass · Accepted Answer

External electron donor is required

Vedclass · Answer

(D) In cyclic photophosphorylation,only $PS$ $I$ is involved. Electrons are circulated within the photosystem,and no external electron donor (like water) is required. It operates when light intensity is low or when the ratio of $NADPH$ to $NADP^+$ is high. It primarily functions to synthesize $ATP$ when the cell requires more energy than $NADPH$. Therefore,the statement that an external electron donor is required is false.

Which is not true regarding cyclic electron transfer system $(ETS)$ in the thylakoid membrane of higher plants?

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