BIOL 1201 Lecture : Photosynthesis Notes
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Summary: 6co2 + 12h20 + light 6o2 + c6h12o6 + 6h20. Convert 2 low energy molecules into a high energy molecule. Photosynthetic reactions: a long series of steps, several basic questions. Figure 10. 5, 10. 6, 10. 4 light dependent reactions (light reactions) capture light energy in chemical energy light-independent reactions (dark reactions) use the chemical energy to convert. Composition: a collection of several hundred pigment molecules in the thylakoid membrane. Antenna pigments 200 molecules chlorophyll a and 50 b. Reaction center pigments 1 molecule special chlorophyll a (p700 or p680) Figure 10. 10 the pigments each absorb light in different wave lengths. Figure 10. 14 source of electrons for photosystem 2. Summary of energy transformations: (this will not be covered in lecture) 4) electron transport chain (in inner mitochondrial membrane) in procaryotes no mitochondria all processes take place in the cytoplasm or as part of the cell membrane. 1) photophosphorylation: oxygen as by product (in thylakoid membrane)
