What is the Role of NADP+ in Photosynthesis?

Question

Some options are given below, if you can help me giving an answer (telling me which option is correct).

A. Assist chlorophyll in capturing light.

B. As Primary Electron Acceptor

C.Part of Electron transport chain in Mitochondria.

D. Assist P-II in splitting water

E. Chemical energy carrier to Calvin Cycle.

 

Thanks for the help.

Answer 1

NADP⁺ functions as a carrier to transfer high energy electrons from chlorophyll to other molecules.  So, it looks like option B would be the most appropriate answer.  Option A may be considered, but not the way it is worded, as NADP+ doesn't really "assist" in the capturing of light.  Option C doesn't seem correct because the NADP⁺ in mitochondria are more involved in cellular respiration and not in photosynthesis.  Option D doesn't seem right because the electrons in splitting water in P-II would be transferred to plastoquinone and not to NADP^+.  And finally, E doesn't sound right because in the Calvin Cycle I believe it is NADPH that is the energy carrier.