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150-10photosynthesis[1] - Foundations of Biological Science...

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Foundations of Biological Science I (BioSci 150) C Photosynthesis - some cells evolve an internal reducing environment to get G (free energy) from light...
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Foundations of Biological Science I (BioSci 150) C Oxidation of organic C: Glucose free energy in ATP e- H 2 O, CO 2 e- Reduction of inorganic C: free energy from visible (sun) light glycolysis Krebs Cycle ETS, OP RESPIRATION H 2 O, CO 2 PHOTOSYNTHESIS Glucose
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Foundations of Biological Science I (BioSci 150) C Consider respiration and photosynthesis as essentially oppposite metabolic pathwayts. Which of the two pathways is energetically favorable? Which represents a net reduction of substrate.
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Foundations of Biological Science I (BioSci 150) C Figure 10.1 light energy Light- independent (“dark”) reactions CO 2 Nutrient Chemical energy (CH 2 O) Photosynthesis has light-dependent & light-independent components: Light- dependent reactions H 2 O O 2 Chemical energy - ATP , NADPH
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Foundations of Biological Science I (BioSci 150) C Wavelengths (nm) 10 13 10 11 10 9 10 7 10 -5 10 5 10 3 10 -3 10 -1 10 1 Gamma rays X rays Ultra- violet Infrared Micro- waves Radio waves Lower energy
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