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Photosyntesis

Photosyntesis. What is photosynthesis?. The ability to use light to convert inorganic molecules into organic molecules. H 2 O + CO 2 ==== light ==  sugar + O 2. Sugar can then be used to make other required molecules, or it can be

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Photosyntesis

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  1. Photosyntesis What is photosynthesis? The ability to use light to convert inorganic molecules into organic molecules. H2O + CO2 ==== light == sugar + O2 Sugar can then be used to make other required molecules, or it can be Broken down as a source of energy… O2 is simply a biproduct of photo- Synthesis… almost all the O2 in the earth’s atmosphere comes from phot Synthesis.

  2. Photosyntesis Leaves and Chloroplasts are adaptations for photosynthesis.

  3. Photosynthesis has two phases: A light dependent reaction where the energy in light is converted into chemical energy of molecules such as ATP and NADPH. A dark reaction where the molecular energy carriers are used to build the sugar molecules. Photosyntesis – light and dark reactions

  4. Photosyntesis – Pigments The first step of photosynthesis involves using pigments to capture light. The range of visible light used for photosynthesis is from about 400 to 750 nanometer wavelengths of electromagnetic radiation… this range is referred to as PAR – Photosynthetically Active Radiation. Although chlorophyll is the primary pigment used by plants (it’s what makes plants green…), other pigments such as carotenoids and phycocyanin are also used… why do you think this is?

  5. Photosyntesis – Effects of varying light levels P: photosynthesis Pmax: maximum photosynthesis Pg : gross photosynthesis Pn : net photosynthesis R : respiration IK : saturating irradiance

  6. Respiration Photosynthesis: H2O + CO2 ==== light == glucose (sugar) + O2 Complete glucose metabolism through cellular respiration: sugar + O2 ====== H2O + CO2 + chemical and heat energy

  7. Respiration – summary

  8. Respiration – Glycolysis

  9. Respiration – summary

  10. Respiration – lactate and alcohol fermentation

  11. Respiration NADH: Nicotinamide adenine dinucleotide FADH2: Flavin adenine dinucleotide

  12. Respiration – electron transport chain

  13. Respiration – electron transport chain

  14. Respiration – electron transport chain

  15. Respiration - summary

  16. Respiration – other organics besides sugars?

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