During noncyclic photophosphorylation all of the following occur EXCEPT

C 4 PHOTOSYNTHESIS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	ATP is made using electron energy that will leave on NADPH
B	results in oxygen gas being produced
C	water is split (photolysis)
D	electrons from photosystem 1 return back to photosystem 1

Explanation:

Detailed explanation-1: -During non-cyclic photophosphorylation, the electrons released by P700 are carried by primary acceptor and are finally passed on to NADP. Here, the electrons combine with the protons – H+ which is produced by splitting up of the water molecule and reduces NADP to NADPH2.

Detailed explanation-2: -The net result of non-cyclic phosphorylation is the formation of NADPH, oxygen and ATP molecules. Oxygen is produced as a waste product of photosynthesis.

Detailed explanation-3: -Photolysis of water does not take place. There is no evolution of oxygen takes place because it is not connected with photolysis of water. Cyclic photophosphorylation produces ATP only. It does not involve the formation of NADPH.

Detailed explanation-4: -NADPH formation does not take place in cyclic photophosphorylation. In this pathway, only a single molecule of ATP is synthesised.

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