Question

What happens in photosystem II?


Excited electrons are used to split water molecules.


Electrons are reenergized to be used in NADPH production.


Excited electrons are transferred to an electron transport chain.

Answer 1

During the light-dependent reactions, an electron that's excited in PSII is passed down an electron transport chain to PSI (losing energy along the way). In PSI, the electron is excited again and passed down the second leg of the electron transport chain to a final electron acceptor.