PHOTOSYNTHESIS
LIGHT DEPENDENT REACTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It absorbs light
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It is a final electron acceptor
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It is a light-reflecting pigment
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It acts as long-term energy storage
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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: -Therefore the electron acceptor in non-cyclic photophosphorylation is NADP+.
Detailed explanation-3: -Nicotinamide adenine dinucleotide (NAD) and its phosphorylated form (NADP) are essential electron acceptors/donors in a broad range of cellular redox processes (Pollak et al., 2007).
Detailed explanation-4: -Reduced nicotinamide adenine dinucleotide phosphate (NADPH) is an essential electron donor in all organisms.
Detailed explanation-5: -Answer and Explanation: In plants, the final electron acceptor in noncyclic electron flow is (a) NADP+. When this electron carrier molecule accepts electrons from the electron transport chain in the thylakoid membrane of chloroplasts, it will be reduced into NADPH.