Arrange the various steps given below in the light reaction of oxygenic photosynthetic organisms in correct sequence. A. Ejection of electron from reaction center of PS II B. Photolysis of waterC. Pumping of protons from stroma to lumenD. Formation of $$NADPH+H+$$

Question

Arrange the various steps given below in the light reaction of oxygenic photosynthetic organisms in correct sequence. A. Ejection of electron from reaction center of PS II B. Photolysis of waterC. Pumping of protons from stroma to lumenD. Formation of $$NADPH+H+$$

Infinity Learn · Accepted Answer

In the light reaction of photosynthesis during $$non-cyclic$$ electron transport, LHC of PSII absorbs photons and transmit them to its reaction center $$P680$$ which ejects electrons and oxidized. Then water is split and oxygen is released prior to the operation of PQ cycle.  PQ cycle  that shows cyclic movement of electrons, helps in pumping protons from stroma to lumen with the involvement of Cytochrome $$b6f$$ complex. As the last step, the NADP is reduced to $$NADPH+H+$$.

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