Photosynthesis - • Temperate grasses and broad leaf trees...

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Photosynthesis 1. 2 Distinct Processes, Dark and Light Phase Overview see diagram Used to make ATP; oxygen is a waste product 2. (System 2 comes first!) Light Phase Photosynthesis 2 enzyme complexes utilized system I, system II (II comes first) Basis for light phase photosynthetic pigments o Chlorophyl o Xanthophyl o Caretenoids (pigments in underwater plants journal) All photosynthetic pigments absorb light from different colors. Process overview (see diagram for photosystem II) 3. Dark Phase Photosynthesis Overview a reverse of cell respiration ATP + CO2 + H2O Glucose Two versions of the process: o Both involve complex cycles C 3 = Calvin Cycle Primitive Process
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Unformatted text preview: • Temperate grasses and broad leaf trees (including coniferous) C 4 or (CAM) Cycle • Warm temperature tropical grasses, all grain except one (journal: oats) • Works better under low CO2 levels (C-four revolution: journal) 4. Light Absorption & Photosynthesis Pigments • Color o Light: determined by light wave length (400mm blue, 700mm red) o Surfaces: color is a product of light absorption and reflection (what colors does the surface not absorb?) • Photosynthetic Pigments o Visible color of the pigment indicates a useless light color for photosynthesis o Even where absorption occurs in a pigment, not all colors are necessarily equal...
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This note was uploaded on 09/14/2011 for the course BIO 1001 taught by Professor Staff during the Fall '08 term at Cornell University (Engineering School).

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