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Cellular Respiration

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  1. Cellular Respiration

  2. Bellwork • Which of the following organisms can undergo cellular respiration?

  3. Objectives • Write the chemical reaction for cellular respiration • Describe the biochemical pathways involved in cellular respiration • Identify the inputs and outputs of each biochemical pathway

  4. Key Terminology • Aerobic • Anaerobic • Glycolysis • Krebs cycle • Oxidative electron transport • Mitochondrial matrix • Inner membrane of Mitochondria

  5. Energy flow in ecosystem

  6. Cellular Respiration • Definition: The process cells use to breakdown complex organic molecules for the production of energy • Chemical Reaction Glucose + O2 CO2 + H2O + energy

  7. Overview • Animation

  8. Paraphrase Write down at least one key point you gained from the Overview Animation: 6 PROPERTY OF PIMA COUNTY JTED, 2010 PROPERTY OF PIMA COUNTY JTED, 2010

  9. Biochemical Pathways involved in Cellular Respiration • Three major pathways in this process: • Glycolysis • Krebs cycle • also known as the Citric Acid Cycle • Oxidative Electron Transport

  10. Structure of Mitochondria • Oxidative Electron Transport • located in inner membrane • Krebs cycle • located in mitochondrial matrix (thick liquid inside inner membrane)

  11. Location of Pathways within the Cell Oxidative Electron Transport In the Inner Membrane Matrix

  12. Glycolysis • Main function • to break down Glucose and produce pyruvate • Takes place outside the mitochondria • in the cytoplasm of the cell • Makes 2 ATP molecules • Pyruvate enters mitochondria and modified • Into Acetyl CoA for next step

  13. Process of Glycolysis • Animation

  14. Paraphrase Write down at least one key point you gained from the Glycolysis Animation: 6 PROPERTY OF PIMA COUNTY JTED, 2010 PROPERTY OF PIMA COUNTY JTED, 2010

  15. Summary of Glycolysis

  16. Krebs Cycle • Main function • break down Acetyl CoA to CO2 • produce NADH and FADH2 • Carriers of high energy electrons • Located in the mitochondrial matrix • Makes 2 ATP molecules • The CO2 you exhale is made in this pathway

  17. Process of Krebs Cycle • Animation

  18. Paraphrase Write down at least one key point you gained from the Krebs Cycle Animation: 6 PROPERTY OF PIMA COUNTY JTED, 2010 PROPERTY OF PIMA COUNTY JTED, 2010

  19. Summary of Krebs Cycle

  20. Oxidative Electron Transport • Main Function • Accepts energized electrons from NADH and FADH2 • Passes those electrons to O2 • O2 is ultimate electron acceptor • producing H20 • Located within inner membrane of mitochondria • Electron flow provides energy • for ATP production

  21. Process of Oxidative ElectronTransport • Animation

  22. Paraphrase Write down at least one key point you gained from the Oxidative Electron Transport Animation: 6 PROPERTY OF PIMA COUNTY JTED, 2010 PROPERTY OF PIMA COUNTY JTED, 2010

  23. Summary of Oxidative Electron Transport

  24. Comparison of PSET to OxET • Electron donor • H2O • Electron Acceptor • NADP+ • Electron donor • NADH, FADH2 • Electron Acceptor • O2 Photosynthetic Electron Transport PSET Oxidative Electron Transport OET

  25. Letter or Note to a Friend Write a note to a friend or absent classmate explaining 3 differences between Glycolysis, Krebs Cycle and Oxidative Electron Transport in cellular respiration 25 PROPERTY OF PIMA COUNTY JTED, 2010

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