A) photolysis of water
B) Calvin cycle
C) nitrogen fixation
D) water absorption
Correct Answer: A
Solution :
Photolysis of water requires light energy, an Oxygen Evolving Complex (OEC) and electron carrier 1/2. OEC complex was formerly called Z-enzyme. It has four Mn ions. Light energy brings about changes in \[\text{Mn(M}{{\text{n}}^{\text{+2}}}\text{,M}{{\text{n}}^{\text{3+}}}\text{,M}{{\text{n}}^{\text{+4}}}\text{)}\] which helps in removing electrons from \[O{{H}^{-}}\]component of water forming oxygen. Liberation of oxygen also requires \[C{{l}^{-}}\]and\[C{{a}^{+2}}.\]
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