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Cell Energy

How do cells get energy?. Photosynthesis Respiration. Cell Energy. What is photosynthesis?. Process where cells take radiant (from the sun) energy and change it into food. Photosynthesis. How do cells use radiant energy to make food?. Two step process Capture radiant energy

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Cell Energy

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  1. How do cells get energy? Photosynthesis Respiration Cell Energy

  2. What is photosynthesis? Process where cells take radiant (from the sun) energy and change it into food Photosynthesis

  3. How do cells use radiant energy to make food? Two step process Capture radiant energy Produce sugar (food) Photosynthesis

  4. How do cells capture radiant energy? Chloroplasts in plant leaves and other green plant parts absorb radiant energy Chlorophyll is the green pigment (chemical compound) that does this Photosynthesis

  5. How do cells produce sugar from radiant energy? Cells need H2O (absorbed from roots), CO2 (from air) and radiant energy to make sugar used as food Photosynthesis formula CO2 + H2O + radiant energy glucose + O2 Photosynthesis

  6. Photosynthesis Formula • 6CO2 + 6 H2O light C6H12O6 + 6O2 • (Carbon Dioxide + water ) ( glucose + oxygen) • Raw MaterialsProducts

  7. Photosynthesis checkpoint • What organelle captures radiant energy? • A. mitochondria • B. vacuole • C. chloroplast • D. ribosome

  8. Answer • C. The chloroplast contain a pigment call chlorophyll which captures radiant energy.

  9. What are the raw materials of photosynthesis? • A. oxygen + carbon dioxide • B. carbon dioxide + water • C. water + sugar • D. sugar + oxygen

  10. Answer • B carbon dioxide and water are the raw materials that change into sugar and oxygen

  11. What are the products of photosynthesis? • A. oxygen + carbon dioxide • B. carbon dioxide + water • C. water + sugar • D. sugar + oxygen

  12. Answer • D sugar and oxygen are produced from carbon dioxide and water.

  13. What is respiration? Process where cells use glucose to produce energy Respiration

  14. How do cells use glucose to produce energy? Two step process Glucose is broken down Smaller molecules of broken down glucose are used to produce energy Respiration

  15. How does glucose get into the cell? Glucose enters through transport proteins in the cell membrane during facilitated diffusion and is broken down into smaller molecules in the cytoplasm Respiration

  16. How is the energy produced? The broken down molecules enter the mitochondria where they are broken down more. O2 and the smaller molecules react creating large amounts of energy Glucose + O2 CO2 + H2O + Energy Respiration

  17. Respiration Formula • C6H12O6 + 6O2 6CO2 + 6 H2O • ( glucose + oxygen) (Carbon Dioxide + water ) • Raw MaterialsProducts

  18. These processes form a cycle A Cycle is Formed Respiration O2 Animals use O2 from plants Photosynthesis CO2 Plants use CO2 from animals

  19. Respiration checkpoint • How does glucose enter the cell? • A. active transport • B. endocytosis • C. osmosis • D. facilitated diffusion

  20. Answer • D glucose molecules attach to transport proteins in the cell membrane and enter the cell through facilitated diffusion.

  21. Where does respiration take place? • A. mitochondria • B. vacuole • C. chloroplast • D. ribosome

  22. Answer: • A – respiration takes place in the mitochondria.

  23. What are the raw materials of respiration? • A. oxygen + carbon dioxide • B. carbon dioxide + water • C. water + sugar + energy • D. sugar + oxygen

  24. Answer • D sugar and oxygen are the raw materials in respiration

  25. What are the products of respiration? • A. oxygen + carbon dioxide + energy • B. carbon dioxide + water + energy • C. water + sugar • D. sugar + oxygen + energy

  26. Answer • B carbon dioxide, water, and energy are the products from respiration

  27. What is fermentation? Breakdown of glucose to produce energy when not enough O2 is available. Takes place in the cytoplasm NOT the mitochondria. This process produces wastes. Fermentation

  28. What wastes are produced? Lactic acid or Alcohol and CO2 Fermentation

  29. Wastes? Muscle cells produce lactic acid which makes the muscles sore. Bacteria produce lactic acid which is used in the production of yogurt and some chesses Fermentation

  30. Wastes continued… Yeast use fermentation to produce alcohol and CO2 . This process is used to make bread rise and wine. Fermentation

  31. Where does fermentation take place? A. mitochondria B. chloroplasts C. cytoplasm D. vacuole

  32. Answer: • C. the cytoplasm. When not enough O2 is available, the broken down glucose molecules make energy in the cytoplasm.

  33. What are the products of fermentation? • A. carbon dioxide or water + glucose • B. glucose or oxygen + lactic acid • C. lactic acid or alcohol + oxygen • D. alcohol or carbon dioxide + lactic acid

  34. C. Lactic acid or alcohol and carbon dioxide. Muscles and some microorganisms produce lactic acid Yeast produces alcohol and carbon dioxide Answer:

  35. Explain this statement. All living things get energy from the sun. Explain

  36. Make a multi-flow map of photosynthesis Photosynthesis glucose Carbon dioxide oxygen water radiant energy

  37. Multi-flow photosynthesis Carbon dioxide glucose Photosynthesis water oxygen Radiant energy

  38. Create a multi-flow map of respiration oxygen water respiration glucose energy Carbon dioxide

  39. Multi-flow respiration glucose Carbon dioxide Respiration water oxygen energy

  40. Make a multi-flow map of fermentation alcohol Lactic acid Carbon dioxide fermentation glucose

  41. Multi-flow of fermentation Lactic acid fermentation glucose alcohol Carbon dioxide

  42. Compare/contrast respiration to fermentation • How are the two processes similar? • How are the two processes different? • Draw a double bubble map to show the similarities and differences

  43. Glucose is broken down energy released uses O2 Lactic acid alcohol CO2 H2O cytoplasm mitochondria Fermentation Respiration

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