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Photosynthesis PS, Paper Chromatography, Spectrophotometer

PHOTOSYNTHESIS. Refer to Text book chapter 8 for reference. PHOTOSYNTHESIS IN NATURE. Synthesizes energy-rich organic molecules from CO2 and H2OUses CO2 as a carbon source and light energy as energy sourceDirectly or indirectly supplies energy to most living organisms. Plants and other autotroph

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Photosynthesis PS, Paper Chromatography, Spectrophotometer

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    1. Photosynthesis (PS), Paper Chromatography, & Spectrophotometer Objectives: Understand the chemical reaction for PS Determine & measure the rate of PS Explain the effect of light intensity on PS Understand/Define/Recognize “pigments”, “absorption”, & “transmission” Know the principle of paper chromatography Understand the relationship between absorption & wavelength

    2. PHOTOSYNTHESIS Refer to Text book chapter 8 for reference

    3. PHOTOSYNTHESIS IN NATURE Synthesizes energy-rich organic molecules from CO2 and H2O Uses CO2 as a carbon source and light energy as energy source Directly or indirectly supplies energy to most living organisms

    4. Plants and other autotrophs are the producers of the biosphere Autotrophic nutrition (producers) a. Photoautotrophs (plants, algae, some prokaryotes) b. Chemoautotrophs (oxidation of inorganic substances, bacteria use sulfur or ammonia) Heterotrophic nutrition (consumers or decomposers)

    5. CHLOROPLASTS: SITE OF PHOTOSYNTHESIS Chlorophyll: green pigment, absorbs light In mesophyll (interior tissue of leaf) CO2 enters, O2 exits (stomata) Water from roots through vascular bundles Chloroplast: lens-shaped Internal compartments: Intermembrane space Thylakoid space (thylakoids, grana) Stroma

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