Photosynthesis 0.0 / 5 ? BiologyPhysiologyUniversityNone Created by: CJohnstone2001Created on: 05-12-20 13:44 Photosynthesis CO2+H2O--> Carbs + O2 6Co2+12H2O+Light energy--> C6H12O6+6O2+6H2O Stages= Light reactions/Carbon(calvin) reac Chloroplasts= contain chlorophyll pigment 1 of 8 Redox Process H to CO2= Red CO2 to sugar. E- transferred alongside H+ ions. Req energy provided by light 2 of 8 Overview Light reac (photo) Thylakoids Split H2O Rel O2 Reduce NADP+ to NADPH ATP generated from ADP (photophosphorylation) Calv cycle (synthesis) Stroma Sugar formed by CO2 using ATP and NADPH. Starts with Carbon Fixation. 3 of 8 Photosystems II--> Acts first Captures light effic at 680nmm (red) I--> Captures light effic at 700nm 4 of 8 Calvin cycle Co2 to Sugar Uses ATP and NADPH Phases Carbon Fixation Reduction Regeneration Co2 acceptor (RuBP) Carbon enters as CO2 and leaves as G3P 5 of 8 Photorespiration 1st stage Calv cyc= prod C3 compound. Hot climate closes stomata CO2 dec in leaf Rubisco adds O2 Cabon leaves chloroplast as CO2. consumes ATP 6 of 8 C4 Carbon Path Adaptation for photosynth in hot climates (sugarcane) 7 of 8 CAM Path Crassulacean Acid Metabolism Cacti/Pineapples Stomata open at night/close in day CO2 incorporated to organic comp at night Day= CO2 released and available for light fuelled sugar prod 8 of 8
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