what is the role of the electron transport chain in light reactions?

Question

can't find the answer anywhere in my textbook

Answer 1

Since you can't find it in your text book (surprising), try this site.  It's very good.

https://www.khanacademy.org/science/biology/photosynthesis-in-plants/the-light-dependent-reactions-of-photosynthesis/a/light-dependent-reactions