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Cellular Respiration

Cellular Respiration. Process of transferring energy in organic compounds to ATP Equation = OPPOSITE OF PHOTOSYNTHESIS!!! What was the equation for photosynthesis???. *Cellular respiration without oxygen (anaerobic) is less efficient than cellular respiration with oxygen (aerobic)….

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Cellular Respiration

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  1. Cellular Respiration Process of transferring energy in organic compounds to ATP Equation = OPPOSITE OF PHOTOSYNTHESIS!!! What was the equation for photosynthesis???

  2. *Cellular respiration without oxygen (anaerobic) is less efficient than cellular respiration with oxygen (aerobic)… Anaerobic Respiration => 2 net ATPs Aerobic Respiration => 36 net ATPs

  3. Cellular Respiration is much like the “opposite” of photosynthesis.

  4. Formula for Cellular Respiration C6H12O6 + 6O26CO2 + 6H2O + ATP What will the cell use the ATP for? (energy for the cell to use for other processes) Name some specific process of the cell.

  5. Takes place in and around the mitochondrion.

  6. What is the organelle of cellular respiration????

  7. Some of the steps in cellular respiration take place on the inner membrane of the mitochondrion, which is folded. • What purpose do these folds serve?

  8. Aerobic and Anaerobic C.R. begin with glycolysis…

  9. Glycolysis – Step One Glucose 2 Pyruvic acid To the electron transport chain **In the cytoplasm **Anaerobic = NO OXYGEN needed **Glucose is broken down to release energy – makes 2ATP **Products used in Kreb’s Cycle and ETC

  10. Let’s take a look at how plants and other cells use the glucose that is produced. Energy is packaged in glucose during the process of photosynthesis. However, the glucose molecule is bound together. Do you think cells can use this glucose in its current form? No So what has to happen to the glucose, if it is bound together, in order for cells to use it? The bond has to be broken and a more useable form of energy should be produced.

  11. GLUCOSE ( C6H12O6)

  12. GLUC ( C6H OSE 12O6)

  13. GLUC ( C6H OSE 12O6)

  14. ENERGY GLUC ( C6H OSE 12O6)

  15. ENERGY ATP (Adenosine Triphosphate)

  16. The presence or absence of oxygen determines whether fermentation (anaerobic respiration) or aerobic respiration will occur next…

  17. No oxygen… • Glycolysis still occurs • Pyruvic acid (broken down glucose) is changed through fermentation

  18. In Fermentation: • No extra ATP is made • Two kinds: • Lactic Acid Fermentation – causes muscle fatigue • Alcoholic Fermentation – • makes beer, bread and wine

  19. Anaerobic Respiration 1ST step – ________________ *Takes place in ____________ *Breaks down ___________ *Makes ____ ATP 2ND step – ____________________ 2 Types: 1. ______________ 2. ______________

  20. Mitochondrion Electrons carried in NADH Electrons carried in NADH and FADH2 Pyruvic acid Glucose Electron Transport Chain Krebs Cycle Glycolysis Mitochondrion Cytoplasm If oxygen is present... aerobic respiration can occur

  21. Chemical Pathways Glucose Krebs cycle Electrontransport Glycolysis Alcohol or lactic acid Fermentation (without oxygen)

  22. Cellular Respiration Glucose(C6H1206) + Oxygen(02) Glycolysis KrebsCycle ElectronTransportChain Carbon Dioxide (CO2) + Water (H2O)

  23. ***Occurs in the mitochondrial matrix • * Makes carbon dioxide & 2 ATP • * Makes NADH, FADH2 (electron carriers)  ETC!! Citric Acid Production Citric Acid Cycle (Krebs Cycle)–Step 2

  24. Electron Transport Chain – Step 3 Occurs on proteins on inner membrane!

  25. Electron Transport Hydrogen Ion Movement Channel Mitochondrion Intermembrane Space ATP synthase Inner Membrane Matrix ATP Production Electron carrier molecules (FADH2 & NADH) from Kreb’s Cycle bring high energy e- formed in previous steps

  26. The electron carriers make 32 TOTAL!!!

  27. Electron Transport Hydrogen Ion Movement Channel Mitochondrion Intermembrane Space ATP synthase Inner Membrane Matrix ATP Production Oxygen accepts e- which also combine with H+ to form water Final Electron Acceptor = OXYGEN!

  28. Aerobic Respiration 1st step – glycolysis *Makes ___ ATP *Takes place in __________ 2nd step – Citric acid (Krebs) cycle *Makes ____ ATP *Makes ___________ *Takes place in ____________ 3rd step – Electron Transport Chain *Makes _____ ATP *Uses ______ to make _______ *Takes place in _______________

  29. Glycolysis – cytoplasm Reactants: glucose Products: 2 ATP and broken glucose Krebs Cycle – matrix Reactants: broken glucose Products: CO2, 2 ATP, NADH and FADH2 ETC – inner membrane Reactants: O2, NADH and FADH2 Product: Water and 32 ATP!!!

  30. Cellular Respiration 2 ATP Glycolysis Glucose Broken glucose CO2 Citric Acid Cycle Kreb’s Cycle Broken glucose 2 ATP NADH and FADH Water NADH and FADH Electron Transport Chain Oxygen 32 ATP

  31. October 14, 2009 Warm – Up: Write the question and answer!!! • Which process is an energy releasing one? a. Photosynthesis b. Cellular Respiration 2. Which statement is true? • Only animal cells undergo CR. • Only plant cells undergo CR. • Both animals and plants undergo CR. 3. What molecule is broken down to make ATP? a. Glucose b. Water c. Carbon Dioxide d. Water

  32. CR Review: Identify A, B, C, D, E

  33. Review Photosynthesis and Cellular Respiration • Make sure you know… • Equations of each! • Reactants of each! • Products of each! • How they are alike! • How they are different! • How they depend on each other! Review on Board...

  34. ***Check your understanding***Explain the process of Photosynthesis to a neighbor using the following terms : carbon dioxide light energy glucose food oxygen gas process water chloroplast plants Write out your explanation using the above terms.

  35. ***Check your understanding*** Why do you think cells under go the process of cellular respiration? Explain the process of cellular respiration using the following terms: carbon dioxide food molecules glucose cells oxygen gas process ATP Mitochondria water

  36. Complete the following chart What do you notice about the reactant and products of cellular respiration in comparison to the reactants and products of photosynthesis?

  37. Compare photosynthesis and cellular respiration… Photosynthesis Cellular Respiration

  38. Comparison of photosynthesis and aerobic respiration X

  39. Compare the 2 Processes… • Table • Venn Diagram • Photosynthesis Flow Chart • Cellular Respiration Flow Chart

  40. Stations • Photosynthesis Review • Cellular Respiration (CR) Review • Manipulative Review Station • Do the equation for Photosynthesis • Do the equation for CR • T Chart – Compare Photosynthesis & CR • Ring of Truth – Put the true statements inside the inner circle and the false statements outside the inner circle

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