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Energy in a Cell

Energy in a Cell. Cellular Respiration. Levels ofOrganization and Cellular Respiration AgileMind 5. Cellular Respiration and Energy Transfer Overview p. 5. Energy Sources AgileMind 5. Cellular Respiration and Energy Transfer Energy Transformation p. 3. Cellular Respiration.

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Energy in a Cell

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  1. Energy in a Cell Cellular Respiration

  2. Levels ofOrganization and Cellular RespirationAgileMind5. Cellular Respiration and Energy TransferOverviewp. 5

  3. Energy SourcesAgileMind5. Cellular Respiration and Energy TransferEnergy Transformationp. 3

  4. Cellular Respiration • Cellularrespiration: process where mitochondria break down food molecules to produce ATP. (energy)

  5. Mini-Quiz: Plants vs. AnimalsAgileMind5. Cellular Respiration and Energy TransferEnergy Transformationp. 4

  6. Plants and Cellular RespirationAgileMind5. Cellular Respiration and Energy TransferFermentation and Metabolismp. 10

  7. Breaking Down FoodAgileMind5. Cellular Respiration and Energy TransferEnergy Transformationp. 5

  8. Enzymes – Activation EnergyAgileMind5. Cellular Respiration and Energy TransferEnergy Transformationp. 7 - 9

  9. Energy from FoodAgileMind5. Cellular Respiration and Energy TransferBiochemistry of Cellular Respirationp. 2

  10. Cellular Respiration • Three stages in cellular respiration: glycolysis, citric acid cycle, and electron transport chain.

  11. Cellular Respiration in a Brain CellAgileMind5. Cellular Respiration and Energy TransferBiochemistry of Cellular Respirationp. 3

  12. Cellular Respiration • Mitochondria is called the powerhouse of the cell because it is the site of cellular respiration.

  13. Cellular Respiration • More work a cell does, the more mitochondria it has.

  14. Cellular Respiration • Glycolysis: first stage of cellular respiration.

  15. Cellular Respiration • Takes place in the cytoplasm of the cell.

  16. Cellular Respiration • One C6H12O6 (glucose) is brokendown into 2 pyruvic acid molecules. (a 3 C molecule)

  17. Cellular Respiration • For every glucose molecule broken down, 2ATP molecules are produced.

  18. Glycolysis and Mini-QuizAgileMind5. Cellular Respiration and Energy TransferBiochemistry of Cellular Respirationp. 4 - 5

  19. Cellular Respiration • Next, the pyruvic acid moves into the mitochondria.

  20. Cellular Respiration • Citric acid cycle or Kreb’s cycle : Pyruvic acid is broken down in a series of reactions to produce 2CO2 and 1ATP and electrons are passed on to the electron transport chain.

  21. Krebs Cycle and Mini-QuizAgileMind5. Cellular Respiration and Energy TransferBiochemistry of Cellular Respirationp. 6 - 7

  22. Cellular Respiration • Electrontransportchain: series of proteins where electrons are passed.

  23. Cellular Respiration • Energy is released as electrons are passed from one molecule to the next.

  24. Cellular Respiration • The released energy is used to make ATP.

  25. Electron Transport Chain and Mini-QuizAgileMind5. Cellular Respiration and Energy TransferBiochemistry of Cellular Respirationp. 8 - 9

  26. Overall: • For every glucose that enters cellular respiration 36 ATP are produced.

  27. Cellular Respiration • Cellular respiration can be classified as aerobic: cellular respiration occurs in the presence of O2.

  28. Cellular Respiration • Most efficient form of respiration.

  29. Cellular Respiration • Krebs cycle is aerobic respiration.

  30. Cellular Respiration • Cellular respiration can also be classified as anaerobic: respiration that proceeds in the absence of O2.

  31. Cellular Respiration • Glycolysis is anaerobic respiration.

  32. Cellular Respiration • Not as efficient as aerobic. Only 2ATP formed.

  33. Cellular Respiration • In the absence of O2, pyruvic acid backs up and is eliminated2 ways:

  34. Cellular Respiration • In you and me, pyruvic acid is converted to lacticacid and builds up in the muscles.

  35. Cellular Respiration • In yeast, pyruvic acid converted to CO2 and ethylalcohol. This makes bread rise.

  36. Cellular Respiration • Anaerobic respiration is also called fermentation.

  37. Aerobic Respiration vs. Fermentation Mini-QuizAgileMind5. Cellular Respiration and Energy TransferFermentation and Metabolismp. 6

  38. What happens to Macromolecules?AgileMind5. Cellular Respiration and Energy TransferFermentation and Metabolismp. 8

  39. Cellular Respiration • Which molecule has the most stored energy: fat or carbohydrate?

  40. Cellular Respiration • Fat – it has available energy for 51ATP.

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