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Unformatted text preview: o Leaf anatomy • Stoma are openings for Co2 Location of photo synthetic reactions • The convesion of sunlight energy to chemical energy occurs on the thylokoid membranes Two groups of reactions • Light dependent o Cholorphyll and other molecules of the thylakoids capture sunlight energy o Sunlight energy is converted to the energy needed for photosynthesis to happen • Light independent o Enzymes in the stroma synthesize Light dependent reactions • Capture of light by pigments • Light dependent reactions is thylakoid membranes o Photosystem II generates ATP o Photosystem I generates NADPH The energy in visible light • Visible light is radiation fall between 400-750 nanometer Light captured by pigments • Absorption of certain wavelengths • Reflection allows us to see the leaves Why autumn leaves turn color • Chlorophyll breaks down before carotenoids • Page 120...
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- Spring '07
- Photosynthesis, sunlight energy