9/1/20111Autotrophs are the producers of the biosphere Photosynthesis occurs in chloroplasts in plant cells9/1/20112The ChloroplastPlants produce O2 gas by splitting waterPhotosynthesis is a redox process, as is cellular respiration9/1/20113Overview: The two stages of photosynthesis are linked by ATP and NADPHVisible radiation drives the light reactionsInteraction of light with a chloroplast9/1/20114Photosystems capture solar power Two photosystems connected by an electron transport chain generate ATP and NADPHChemiosmosis powers ATP synthesis in the light reactions9/1/20115ATP and NADPH power sugar synthesis in the Calvin cycleReview: Photosynthesis uses light energy, CO2, and H2O to make food moleculesAdaptations that save water in hot, dry climates evolved in C4 and CAM
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