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(C) During the light-dependent reactions of photosynthesis,$PS-II$ (Photosystem $II$) loses electrons when it absorbs light energy. To maintain the co

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$H_{2}O$

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(C) During the light-dependent reactions of photosynthesis,$PS-II$ (Photosystem $II$) loses electrons when it absorbs light energy. To maintain the continuous flow of electrons,$PS-II$ requires a constant supply of electrons. This supply is provided by the photolysis (splitting) of water molecules $(H_{2}O)$. The reaction is: $2H_{2}O \rightarrow 4H^{+} + O_{2} + 4e^{-}$. These electrons are then transferred to the electron transport chain,eventually leading to the formation of $NADPH$.

Which chemical compound/molecule supplies electrons continuously to $PS-II$?

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