Biology / Unit 3 Bio 0601 worked example, 60 to 90 seconds
The Light-Dependent Reactions, Full Sequence
Captions available
The idea
The light-dependent reactions run photosystem II, the chloroplast electron transport chain, and photosystem I in sequence, converting light energy into the stored chemical energy of ATP and NADPH.
Where people slip
Photosystem I re-energizes an electron that photosystem II already used once — the two photosystems work in series, not as two independent light-capturing events.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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