A level Biology-Photosynthesis Doubts

Can somebody tell me how do I write the answer to this question:

Explain the role of NADP in photosynthesis. [6]

Mark Scheme points are as follows:

15 coenzyme ;
16 reduced ;
17 carries protons ;
18 and (high energy) electrons ;
19 from photosystem7light stage ; R photosystem II
20 on thylakoid membrane grans ;
21 to stroma / Calvin cycl~
22 ref. regeneration of NADP ;

 You just need to elaborate these points.
The co-enzyme NADP is used to add hydrogen in CO2 to produces carbohydrate molecule such as glucose. in the light dependent stage,after the photophosphorylation, and at the end of the electron carrier chain, the electron is picked up by PS1 to replace the electron the chlorophyll in PSI had lost in the initial stages. Now these electrons are again passed from PSI to a different chain of carriers to NADP. The NADP also picks up the hydrogen ions from the split water molecules. The NADP becomes reduced now which will be used further in the light independent stage to convert the glycerate 3 phosphate into triose phoshphate which is the 1st carbohydrate to be produced in the photosynthesis.

or


NADP is a co-enzyme that serves as an electron acceptor in the electron transport system during photophosphorylation. The electrons released from the 'excited' chlorophyll in PS1 combine with an electron acceptor and pass down a chain that ends with NADP. During photolysis of water, the protons from the splitting of the water molecule help to form reduced NADP along with the electrons from PS1 that combined with the NADP. The reduced NADP then passes along the electrons on to the calvin cycle. During this cycle, glycerate phosphate is reduced to another 3C sugar called triose phosphate, which is phosphoglyceraldehyde by using the reduced NADP from the light dependent stage as the electron donor and ATP is required. NADP then returns to the light dependent stage to pick up another hydrogen ion.