Biology / Unit 3 Bio 0583 short lesson, about 20 seconds
Two Stages of Photosynthesis
Captions available
The idea
Photosynthesis runs in two linked stages: light-dependent reactions convert light energy into stored chemical energy, and light-independent reactions use that energy to build sugar.
In practice
The light-dependent reactions occur in the thylakoid membrane; the light-independent reactions occur in the stroma, per Bio 0273's chloroplast structure.
Where people slip
The light-independent reactions need no light directly, but cannot run without the products the light-dependent reactions already supplied.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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