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Recording · 41:07
BIO 110
…okay so, um, where were we, right, the light reactions. These happen in the thylakoid membrane, so write that down…
…and the key thing, and this will be on the exam, is that water gets split, that's photolysis, and that's where the oxygen comes from…
…not from CO₂, a lot of people get that wrong. Then the energy goes into ATP and NADPH, which we'll need for the Calvin cycle next week…
Your notes
The light reactions
- Happen in the thylakoid membrane of the chloroplast.
- Photolysis splits water: 2H₂O → 4H⁺ + 4e⁻ + O₂
- Energy is stored in ATP and NADPH for the Calvin cycle.
Exam alert
The O₂ comes from water, not CO₂. Your professor said it’ll be tested.
5 flashcardsQuizPodcast
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