Question

in what order do the electrons move through the electron transport chain?
a) water - photosystem ii - nadph - photosystem i
b) water - photosystem ii - photosystem i - nadph
c) water - photosystem i - photosystem ii - nadph
d) photosystem i - water - photosystem ii - nadph

Explanation:

In the light-dependent reactions of photosynthesis, electrons are first released when water is split (photolysis). These electrons then move to photosystem II, are excited, and travel through an electron transport chain to photosystem I. After being excited again in photosystem I, the electrons are used to reduce NADP+ to NADPH.

Answer:

b) Water - photosystem II - photosystem I - NADPH