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Energy Flow- Photosynthesis & Cellular Respiration

Energy Flow- Photosynthesis & Cellular Respiration. Focus Question: Where do plants and animals get their energy from?. Energy Flow. Radiant energy is energy that comes from the Sun

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Energy Flow- Photosynthesis & Cellular Respiration

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  1. Energy Flow- Photosynthesis & Cellular Respiration Focus Question: • Where do plants and animals get their energy from?

  2. Energy Flow • Radiant energy is energy that comes from the Sun • Light energy is seen by humans; it’s absorbed by plants in the chlorophyll and converted into chemical energy during photosynthesis. 0.023% absorbed by plants

  3. Energy Flow • Chemical energy is the energy stored in the bonds of compounds and molecules. 0.023% absorbed by plants

  4. Producers and Consumers • Producers (green plants) create glucose or chemical energy from light energy. They do not need to consume other organisms to get energy. • Consumers are organisms which need to eat (consume) other organisms to get their energy. They cannot perform photosynthesis.

  5. Photosynthesis • Producers perform photosynthesis to create high-energy sugars (glucose), which the plant then uses or stores.

  6. Photosynthesis • Write the word equation for photosynthesis. carbon dioxide + water glucose + oxygen • Write the chemical equation for photosynthesis. CO2 + H2O C6H12O6 + O2 sunlight chlorophyll sunlight chlorophyll

  7. Try This • Try holding your breath for as long as you can. • Why do you feel you need to breathe after a while?

  8. Cellular Respiration • Cellular respirationoccurs in the cells of producers and consumers, releasing energy stored in glucose. • By breaking the bonds in glucose, the chemical energy that was stored in them is released, making it available to be used.

  9. Cellular Respiration • Write the word equation for cellular respiration. glucose + oxygen carbon dioxide + water + ENERGY • Write the chemical equation for cellular respiration. C6H12O6 + O2 CO2 + H2O + ENERGY

  10. The Reactions How are the processes related?

  11. How are they related?

  12. Complementary Processes • Cellular respirationand photosynthesis are complementary processes because the products of one reaction are the reactants of the other reaction. • ie. CO2 and H2O are produced in cellular respiration and needed for photosynthesis to occur.

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