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19 Cards in this Set
- Front
- Back
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Photosynthesis |
Light energy - chemical energy |
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Carbon fixation |
Chemical energy is used to convert CO2 to sugars |
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Photosynthesis performed by : |
Cyanobacteria Algae Green plants |
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Oxygenic photosynthesis electron donor |
H2O |
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Photosynthesis kinds (2) |
Light dependant reactions (Light) Light independent reactions (dark) |
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Light dependant reactions (2) |
Cyclic Non Cyclic |
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Cyclic photophosphorylation |
Uncommon NO OXYGEN generated |
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Cyclic photophosphorylation cycle steps |
1. Light excites e- from chlorophyll 2. Excited e- enter ETC 3. P+ are pumped across membrane 4. ADP and Pi converted to ATP 5. Electrons return to chlorophyll |
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Non Cyclic photophosphorylation |
Most common O2 is generated |
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Non Cyclic photophosphorylation cycle steps |
1. Light excites e- from chlorophyll 2. Excited e- enter ETC 3. e- DO NOT return to chlorophyll but will become incorporated into NADPH 4. Electrons lost are replaced by e- from H2O or H2 5. P+ pumped across membrane 6. ADP and Pi converted to ATP 7. e- transfered to e- carrier NADP+ 8. NADP+ is reduced to NADPH |
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Light independent reactions |
Calvin Benson cycle |
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Once molecule in Benson cycle produces : |
6 CO2 18 ATP 12 NADPH CYCLE MUST TURN 6 TIMES PER MOL |
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Phototrophs |
Derive energy from light |
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Chenotrophs |
Derive enrgery from organic / inorganic chemicals |
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Autotrophs |
Use CO2 as principle CARBON source |
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Heterotrophs |
Require organic carbon source |
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Photoautotrophs |
Oxygenic: cyanobacteria, Algae, green plants. Calvin Benson cycle fixes CO2 Anoxygenic: green, purple bacteria Sulfur compounds reduce CO2. |
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Photoheterotrophs |
Anoxygenic: green/ purple non sulfur bacteria Alcohol, fatty acids, carbs as carbon source |
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Chemo autotrophs |
Glucose Hydrogen atoms are energy source |
