Question

Which one of the following elements is required for photosynthetic oxygen evolution [MP PMT 1998]
A) Copper
B) Iron
C) Manganese
D) Zinc

Answer 1

magnesium is the element required for photosynthesis oxygen evolution.

Answer 2

Manganese is one of the following elements is required for photosynthetic oxygen evolution.

Explanation:

• The water-splitting reaction is catalyzed by the oxygen evolving complex of photosystem II.
• This protein-bound inorganic complex contains four manganese ions, plus calcium and chloride ions as co-factors.
• Two water molecules are complexed by the manganese cluster, which then undergoes a series of four electron removals (oxidations) to replenish the reaction center of photosystem II.
• At the end of this cycle, free oxygen ($O_2$ ) is generated and the hydrogen of the water molecules has been converted to four protons released into the thylakoid lumen.

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