Am I the only person who is totally confused with higher level Photosynthesis? XD
What are you making.......C6H12O6. With what gas? CO2. So what do you need to add? Hydrogen. Where does that come from? Water. How is the H transported? NADP. What helps stick it to the CO2? ATP. Where does the ATP come from, etc etc etc.
It becomes more understandable, i find.
https://www.youtube.com/embed/sQK3Yr4Sc_k hope it helps