Interest Grabber <ul><li>Feel the Burn </li></ul><ul><li>Do you like to run, bike, or swim? These all are good ways to exe...
Section Outline <ul><li>9–1 Chemical Pathways </li></ul><ul><ul><li>A. Chemical Energy and Food </li></ul></ul><ul><ul><li...
A.  Overview of Cell Respiration <ul><li>1.  process that releases energy by breaking down glucose in the  presence of oxy...
Figure 9–2 Cellular Respiration: An Overview Glucose Glycolysis Cytoplasm Pyruvic acid Electrons carried in NADH Krebs Cyc...
B.  Glycolysis <ul><li>1.  First pathway in a cell getting energy out of food </li></ul><ul><li>2.  takes place in the cyt...
Chemical Pathways Glucose Glycolysis  Krebs cycle  Electron transport Fermentation (without oxygen) Alcohol or lactic acid...
Glycolysis cont. <ul><li>7.  Uses  </li></ul><ul><li>a.  1 molecule of glucose </li></ul><ul><li>Makes </li></ul><ul><li>i...
Figure 9–3 Glycolysis Glucose To the electron transport chain Section 9-1 2 Pyruvic acid
Figure 9–3 Glycolysis Glucose To the electron transport chain Section 9-1 2 Pyruvic acid
Figure 9–3 Glycolysis Glucose To the electron transport chain Section 9-1 2 Pyruvic acid
C.  Fermentation <ul><li>1.  NO O 2  present  (anaerobic) </li></ul><ul><li>2.  Occurs after glycolysis </li></ul><ul><li>...
Figure 9–4 Lactic Acid Fermentation Glucose Pyruvic acid Lactic acid Section 9-1
Figure 9–4 Lactic Acid Fermentation Glucose Pyruvic acid Lactic acid Section 9-1
Figure 9–4 Lactic Acid Fermentation Glucose Pyruvic acid Lactic acid Section 9-1
Interest Grabber <ul><li>Rolling and Folding </li></ul><ul><li>Some of the steps in cellular respiration take place in the...
Interest Grabber  continued <ul><li>1. Obtain two sheets of paper and a metric ruler. What is the surface area of the pape...
Section Outline <ul><li>9–2 The Krebs Cycle and Electron Transport </li></ul><ul><ul><li>A. The Krebs Cycle </li></ul></ul...
Flowchart Section 9-2 Glucose (C 6 H 12 0 6 ) + Oxygen (0 2 ) Glycolysis Krebs Cycle Electron Transport Chain Carbon  Diox...
A.  Cell Respiration Overview <ul><li>1.  occurs in an aerobic environment (O 2  Present) </li></ul><ul><li>2.  3 stages <...
B.  Krebs Cycle <ul><li>1.  Uses </li></ul><ul><li>a.  Pyruvic Acid </li></ul><ul><li>2.  Makes </li></ul><ul><li>i.  Carb...
Figure 9–6 The Krebs Cycle Citric Acid Production Section 9-2 Mitochondrion
Figure 9–6 The Krebs Cycle Citric Acid Production Section 9-2 Mitochondrion
C.  ETC <ul><li>1.  Uses </li></ul><ul><li>a.  O 2 </li></ul><ul><li>2.  Makes </li></ul><ul><li>i.  Finds some H +  and e...
Figure 9–7 Electron Transport Chain Section 9-2 Electron Transport Hydrogen Ion Movement ATP Production ATP synthase Chann...
D.  Totals <ul><li>1.  Breakdown of glucose through cellular respiration creates 36 molecules of ATP </li></ul><ul><li>a. ...
E.  PS v. CR <ul><li>1.  PS </li></ul><ul><li>a.  Deposits energy </li></ul><ul><li>b.  Removes CO 2  from air </li></ul><...
Video Contents <ul><li>Click a hyperlink to choose a video. </li></ul><ul><li>Aerobic Respiration </li></ul><ul><li>Glycol...
Video 1 <ul><li>Click the image to play the video segment. </li></ul>Video 1 Aerobic Respiration
Video 2 <ul><li>Click the image to play the video segment. </li></ul>Video 2 Glycolysis
Video 3 <ul><li>Click the image to play the video segment. </li></ul>Video 3 Krebs Cycle, Part 1
Video 4 <ul><li>Click the image to play the video segment. </li></ul>Video 4 Krebs Cycle, Part 2
Video 5 <ul><li>Click the image to play the video segment. </li></ul>Video 5 Electron Transport Chain, Part 1
Video 6 <ul><li>Click the image to play the video segment. </li></ul>Video 6 Electron Transport Chain, Part 2
Internet <ul><li>Links from the authors on  Creatine </li></ul><ul><li>Share  kimchi  lab data </li></ul><ul><li>Interacti...
Section 1 Answers Interest Grabber Answers 1. How does your body feel at the start of exercise, such as a long, slow run? ...
Section 2 Answers <ul><li>1. Obtain two sheets of paper and a metric ruler. What is the surface area of the paper?  </li><...
End of Custom Shows <ul><li>This slide is intentionally blank. </li></ul>
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Ch. 9 Cellular Respiration

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Biology notes for Chapter 9: Cell Respiration. Includes sections 1 & 2.

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Ch. 9 Cellular Respiration

  1. 1. Interest Grabber <ul><li>Feel the Burn </li></ul><ul><li>Do you like to run, bike, or swim? These all are good ways to exercise. When you exercise, your body uses oxygen to get energy from glucose, a six-carbon sugar. </li></ul>Section 9-1 1. How does your body feel at the start of exercise, such as a long, slow run? How do you feel 1 minute into the run; 10 minutes into the run? 2. What do you think is happening in your cells to cause the changes in how you feel? 3. Think about running as fast as you can for 100 meters. Could you keep up this pace for a much longer distance? Explain your answer.
  2. 2. Section Outline <ul><li>9–1 Chemical Pathways </li></ul><ul><ul><li>A. Chemical Energy and Food </li></ul></ul><ul><ul><li>B. Overview of Cellular Respiration </li></ul></ul><ul><ul><li>C. Glycolysis </li></ul></ul><ul><ul><ul><li>1. ATP Production </li></ul></ul></ul><ul><ul><ul><li>2. NADH Production </li></ul></ul></ul><ul><ul><li>D. Fermentation </li></ul></ul><ul><ul><ul><li>1. Alcoholic Fermentation </li></ul></ul></ul><ul><ul><ul><li>2. Lactic Acid Fermentation </li></ul></ul></ul>Section 9-1
  3. 3. A. Overview of Cell Respiration <ul><li>1. process that releases energy by breaking down glucose in the presence of oxygen </li></ul><ul><li>a. Uses food to make ATPs </li></ul><ul><li>2. Equation is the opposite of photosynthesis : </li></ul><ul><li>a. 6O 2 + C 6 H 12 O 6  6CO 2 + 6H 2 O + energy </li></ul><ul><li>3. 3 main stages of cell respiration </li></ul><ul><li>a. Glycolysis </li></ul><ul><li>b. Krebs Cycle </li></ul><ul><li>c. Electron Transport Chain </li></ul>
  4. 4. Figure 9–2 Cellular Respiration: An Overview Glucose Glycolysis Cytoplasm Pyruvic acid Electrons carried in NADH Krebs Cycle Electrons carried in NADH and FADH 2 Electron Transport Chain Mitochondrion Mitochondrion Section 9-1
  5. 5. B. Glycolysis <ul><li>1. First pathway in a cell getting energy out of food </li></ul><ul><li>2. takes place in the cytoplasm </li></ul><ul><li>3. Releases only a small amount of energy </li></ul><ul><li>4. Will happen with or without oxygen </li></ul><ul><li>5. If O 2 is present then glycolysis leads to 2 other processes </li></ul><ul><li>a. Krebs Cycle </li></ul><ul><li>b. Electron transport Chain </li></ul><ul><li>6. If there is NO O 2 present than fermentation occurs </li></ul><ul><li>a. Lactic Acid </li></ul><ul><li>b. Alcoholic </li></ul>
  6. 6. Chemical Pathways Glucose Glycolysis Krebs cycle Electron transport Fermentation (without oxygen) Alcohol or lactic acid Section 9-1
  7. 7. Glycolysis cont. <ul><li>7. Uses </li></ul><ul><li>a. 1 molecule of glucose </li></ul><ul><li>Makes </li></ul><ul><li>i. Gets rearranged into 2 pyruvic acid molecules </li></ul><ul><li>ii. Pyruvic acid goes to Krebs Cycle if there’s O 2 present </li></ul><ul><li>iii. Goes to fermentation if NO O 2 present </li></ul>
  8. 8. Figure 9–3 Glycolysis Glucose To the electron transport chain Section 9-1 2 Pyruvic acid
  9. 9. Figure 9–3 Glycolysis Glucose To the electron transport chain Section 9-1 2 Pyruvic acid
  10. 10. Figure 9–3 Glycolysis Glucose To the electron transport chain Section 9-1 2 Pyruvic acid
  11. 11. C. Fermentation <ul><li>1. NO O 2 present (anaerobic) </li></ul><ul><li>2. Occurs after glycolysis </li></ul><ul><li>3. Alcoholic </li></ul><ul><li>a. Ex. Yeast </li></ul><ul><li>b. Pyruvic acid + NADH  alcohol + CO 2 + NAD + </li></ul><ul><li>4. Lactic Acid </li></ul><ul><li>a. Ex. Muscle cells during intense exercise </li></ul><ul><li>b. Pyruvic acid +NADH  lactic acid + NAD + </li></ul>
  12. 12. Figure 9–4 Lactic Acid Fermentation Glucose Pyruvic acid Lactic acid Section 9-1
  13. 13. Figure 9–4 Lactic Acid Fermentation Glucose Pyruvic acid Lactic acid Section 9-1
  14. 14. Figure 9–4 Lactic Acid Fermentation Glucose Pyruvic acid Lactic acid Section 9-1
  15. 15. Interest Grabber <ul><li>Rolling and Folding </li></ul><ul><li>Some of the steps in cellular respiration take place in the membrane inside the cell structure called the mitochondrion, which has a folded inner membrane. What purpose do these folds serve? </li></ul><ul><li>To find out the answer to this question, perform this activity. </li></ul>Section 9-2
  16. 16. Interest Grabber continued <ul><li>1. Obtain two sheets of paper and a metric ruler. What is the surface area of the paper? </li></ul><ul><li>2. Roll one sheet of paper into a tube lengthwise. What is the surface area of the rolled paper? </li></ul><ul><li>3. Fold the second sheet of paper into a fan. Then, roll the first sheet of paper around the folded paper so it is inside the rolled paper. What has happened to the surface area of the inside of the rolled paper? </li></ul><ul><li>4. What would be the value of increasing the surface area of the membrane inside a mitochondrion? </li></ul>Section 9-2
  17. 17. Section Outline <ul><li>9–2 The Krebs Cycle and Electron Transport </li></ul><ul><ul><li>A. The Krebs Cycle </li></ul></ul><ul><ul><li>B. Electron Transport </li></ul></ul><ul><ul><li>C. The Totals </li></ul></ul><ul><ul><li>D. Energy and Exercise </li></ul></ul><ul><ul><ul><li>1. Quick Energy </li></ul></ul></ul><ul><ul><ul><li>2. Long-Term Energy </li></ul></ul></ul><ul><ul><li>E. Comparing Photosynthesis and Cellular Respiration </li></ul></ul>Section 9-2
  18. 18. Flowchart Section 9-2 Glucose (C 6 H 12 0 6 ) + Oxygen (0 2 ) Glycolysis Krebs Cycle Electron Transport Chain Carbon Dioxide (CO 2 ) + Water (H 2 O) Cellular Respiration
  19. 19. A. Cell Respiration Overview <ul><li>1. occurs in an aerobic environment (O 2 Present) </li></ul><ul><li>2. 3 stages </li></ul><ul><li>a. Glycolysis (cytoplasm) </li></ul><ul><li>b. Krebs Cycle (mitochondria) </li></ul><ul><li>c. Electron Transport Chain (inner membrane of mitochondria) </li></ul>
  20. 20. B. Krebs Cycle <ul><li>1. Uses </li></ul><ul><li>a. Pyruvic Acid </li></ul><ul><li>2. Makes </li></ul><ul><li>i. Carbon dioxide </li></ul><ul><li>ii. Gets released </li></ul>
  21. 21. Figure 9–6 The Krebs Cycle Citric Acid Production Section 9-2 Mitochondrion
  22. 22. Figure 9–6 The Krebs Cycle Citric Acid Production Section 9-2 Mitochondrion
  23. 23. C. ETC <ul><li>1. Uses </li></ul><ul><li>a. O 2 </li></ul><ul><li>2. Makes </li></ul><ul><li>i. Finds some H + and electrons to make water </li></ul>
  24. 24. Figure 9–7 Electron Transport Chain Section 9-2 Electron Transport Hydrogen Ion Movement ATP Production ATP synthase Channel Inner Membrane Matrix Intermembrane Space Mitochondrion
  25. 25. D. Totals <ul><li>1. Breakdown of glucose through cellular respiration creates 36 molecules of ATP </li></ul><ul><li>a. 6 from glycolysis </li></ul><ul><li>b. 30 from Krebs Cycle and ETC </li></ul><ul><li>2. Waste products </li></ul><ul><li>a. CO 2 </li></ul><ul><li>b. H 2 O </li></ul>
  26. 26. E. PS v. CR <ul><li>1. PS </li></ul><ul><li>a. Deposits energy </li></ul><ul><li>b. Removes CO 2 from air </li></ul><ul><li>c. Only plants, algae, some bacteria </li></ul><ul><li>2. CR </li></ul><ul><li>a. Withdraws energy </li></ul><ul><li>b. Puts CO 2 back in the air </li></ul><ul><li>c. ALL eukaryotes and some prokaryotes </li></ul>
  27. 27. Video Contents <ul><li>Click a hyperlink to choose a video. </li></ul><ul><li>Aerobic Respiration </li></ul><ul><li>Glycolysis </li></ul><ul><li>Krebs Cycle, Part 1 </li></ul><ul><li>Krebs Cycle, Part 2 </li></ul><ul><li>Electron Transport Chain, Part 1 </li></ul><ul><li>Electron Transport Chain, Part 2 </li></ul>Video Contents
  28. 28. Video 1 <ul><li>Click the image to play the video segment. </li></ul>Video 1 Aerobic Respiration
  29. 29. Video 2 <ul><li>Click the image to play the video segment. </li></ul>Video 2 Glycolysis
  30. 30. Video 3 <ul><li>Click the image to play the video segment. </li></ul>Video 3 Krebs Cycle, Part 1
  31. 31. Video 4 <ul><li>Click the image to play the video segment. </li></ul>Video 4 Krebs Cycle, Part 2
  32. 32. Video 5 <ul><li>Click the image to play the video segment. </li></ul>Video 5 Electron Transport Chain, Part 1
  33. 33. Video 6 <ul><li>Click the image to play the video segment. </li></ul>Video 6 Electron Transport Chain, Part 2
  34. 34. Internet <ul><li>Links from the authors on Creatine </li></ul><ul><li>Share kimchi lab data </li></ul><ul><li>Interactive test </li></ul><ul><li>For links on cellular respiration, go to www.SciLinks.org and enter the Web Code as follows: cbn-3091. </li></ul><ul><li>For links on the Krebs cycle, go to www.SciLinks.org and enter the Web Code as follows: cbn-3092. </li></ul>Go Online
  35. 35. Section 1 Answers Interest Grabber Answers 1. How does your body feel at the start of exercise, such as a long, slow run? How do you feel 1 minute into the run; 10 minutes into the run? Students may answer that they feel no fatigue at the start of a run; however, after 1 minute and more so after 10 minutes, they are breathing hard, their heart rate has increased significantly, and their muscles may hurt. 2. What do you think is happening in your cells to cause the changes in how you feel? Students may say that the increase in heart rate and breathing rate are a response that gets extra oxygen to the cells. The pain may be attributed to the cells becoming fatigued. 3. Think about running as fast as you can for 100 meters. Could you keep up this pace for a much longer distance? Explain your answer. Students may know that very high levels of performance can be sustained only very briefly even among the best of athletes. Students may say that the body runs out of readily available energy, food, or oxygen, or that the body builds up too many waste products in the cells.
  36. 36. Section 2 Answers <ul><li>1. Obtain two sheets of paper and a metric ruler. What is the surface area of the paper? </li></ul><ul><li>The area will vary depending on the size of paper used. A sheet of notebook paper has an area of approximately 600 cm 3 . </li></ul><ul><li>2. Roll one sheet of paper into a tube lengthwise. What is the surface area of the rolled paper? </li></ul><ul><li>The surface area is the same as the original sheet of paper. </li></ul><ul><li>3. Fold the second sheet of paper into a fan. Then, roll the first sheet of paper around the folded paper so it is inside the rolled paper. What has happened to the surface area of the inside of the rolled paper? </li></ul><ul><li>The surface area has increased (surface area of rolled paper + surface area of folded paper). </li></ul><ul><li>4. What would be the value of increasing the surface area of the membrane inside a mitochondrion? </li></ul><ul><li>Increasing the surface area increases the amount of space where chemical reactions can take place. </li></ul>Interest Grabber Answers
  37. 37. End of Custom Shows <ul><li>This slide is intentionally blank. </li></ul>

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