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(D) During the light-dependent reactions of photosynthesis,the process of photolysis of water occurs.In this process,water molecules $(H_2O)$ are spli

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Manganese and Chlorine

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(D) During the light-dependent reactions of photosynthesis,the process of photolysis of water occurs.In this process,water molecules $(H_2O)$ are split into protons $(H^+)$,electrons $(e^-)$,and oxygen $(O_2)$.This reaction is catalyzed by the Oxygen Evolving Complex $(OEC)$,which is associated with Photosystem $II$.The essential mineral elements required for the functioning of this complex are Manganese $(Mn^{2+})$ and Chlorine $(Cl^-)$.Therefore,the correct pair of elements involved in the photolysis of water is Manganese and Chlorine.

Process	$AB$	$BC$	$CA$
$\Delta W$	$40 \ J$	$ $	$30 \ J$
$\Delta U$	$ $	$50 \ J$	$ $
$\Delta Q$	$150 \ J$	$10 \ J$	$ $

The oxygen evolved during photosynthesis comes from water molecules. Which one of the following pairs of elements is involved in this reaction?

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