Through which of the following substances doe | vedclass

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(D) During the light-dependent reactions of photosynthesis,the electron transport chain involves the movement of electrons from photosystem-$I$ $(PS-I

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Ferredoxin

Vedclass · Answer

(D) During the light-dependent reactions of photosynthesis,the electron transport chain involves the movement of electrons from photosystem-$I$ $(PS-I)$.After $PS-I$ is excited by light,it transfers electrons to a primary electron acceptor,which then passes them to an iron-sulfur protein called Ferredoxin $(Fd)$.Finally,the enzyme $FNR$ (Ferredoxin-$NADP^+$ reductase) transfers these electrons from reduced Ferredoxin to $NADP^+$,reducing it to $NADPH + H^+$.Therefore,Ferredoxin is the substance that acts as the electron carrier between $PS-I$ and $NADP^+$.Thus,the correct option is $D$.

Through which of the following substances does the photosystem-$I$ pass an electron to $NADP^+$ during light reactions?

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