2. Interest Grabber Feel the Burn
Section 9-1
Feel the Burn
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.
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.

3. OVERALL EQUATION
C6H12O O2  6CO H2O + energy(ATP)
Glucose + Oxygen  Carbon Dioxide + Water + ATP (Adenosine triphosphate)

4. Section Outline 9–1 Chemical Pathways A. Chemical Energy and Food
B. Overview of Cellular Respiration
C. Glycolysis
1. ATP Production
2. NADH Production
D. Fermentation
1. Alcoholic Fermentation
2. Lactic Acid Fermentation

5. Section Outline 9–2 The Krebs Cycle and Electron Transport
A. The Krebs Cycle
B. Electron Transport
C. The Totals
D. Energy and Exercise
1. Quick Energy
2. Long-Term Energy
E. Comparing Photosynthesis and Cellular Respiration

6. ORGANELLE OF FOCUS

7. Figure 9–2 Cellular Respiration: An Overview
Section 9-1
Mitochondrion
Electrons carried in NADH
Electrons carried in NADH and FADH2
Pyruvic acid
Glucose
Electron Transport Chain
Krebs Cycle
Glycolysis
Mitochondrion
Cytoplasm

8. Fermentation (without oxygen)
Chemical Pathways
Section 9-1
Glucose
Krebs cycle
Electron transport
Glycolysis
Alcohol or lactic acid
Fermentation (without oxygen)

9. Electron Transport Chain
Flowchart
Section 9-2
Cellular Respiration
Glucose (C6H1206) +
Oxygen (02)
Glycolysis
Krebs Cycle
Electron Transport Chain
Carbon
Dioxide
(CO2) +
Water
(H2O)

10. To the electron transport chain
Figure 9–3 Glycolysis
Section 9-1
Glucose
2 Pyruvic acid
To the electron transport chain

11. To the electron transport chain
Figure 9–3 Glycolysis
Section 9-1
Glucose
2 Pyruvic acid
To the electron transport chain

12. To the electron transport chain
Figure 9–3 Glycolysis
Section 9-1
Glucose
2 Pyruvic acid
To the electron transport chain

13. Figure 9–6 The Krebs Cycle
Section 9-2
Citric Acid Production
Mitochondrion

14. Figure 9–6 The Krebs Cycle
Section 9-2
Citric Acid Production
Mitochondrion

15. CHECK FOR UNDERSTANDING
BEFORE WE GO ANY FURTHER – SEE HOW WELL YOU UNDERSTAND THE FIRST TWO STEPS IN CELLULAR RESPIRATION:
Answer the questions in your notes, use your textbook Ch9.

16. Figure 9–7 Electron Transport Chain
Section 9-2
Electron Transport
Hydrogen Ion Movement
Channel
Mitochondrion
Intermembrane
Space
ATP synthase
Inner
Membrane
Matrix
ATP Production

17. Summary Chart
Input
Step
Outputs
ATPs
Total ATPS________

18. SUMMARY

19. WHAT IF THERE ISN’T ANY OXYGEN?
CELLUAR RESPIRATION: Anaerobic (fermentation)
*yeast cells = alcohol production
*muscle cells = lactic acid production

20. Figure 9–4 Lactic Acid Fermentation
Section 9-1
Lactic acid
Glucose
Pyruvic acid

21. Figure 9–4 Lactic Acid Fermentation
Section 9-1
Lactic acid
Glucose
Pyruvic acid

22. Figure 9–4 Lactic Acid Fermentation
Section 9-1
Lactic acid
Glucose
Pyruvic acid

23. Pros and Cons of Lactic Acid Fermentation
Pros – your muscle will keep working even without sufficient oxygen

24. Cons – you feel it, lactic acid causes sore muscles and cramping
Your body will get rid of lactic acid – it diffuses into blood and goes to liver where it is converted back to pyruvic acid – ready for O2
LIVER

25. RECAP 6C6H12O6 + 6O2  6CO2 + 6H2O + energy (ATP)
GLUCOSE becomes…
CO2
Oxygen is needed…
to accept the electrons at the end of ETC
CO2 goes…
into blood, lungs, exhaled
Water is produced when…
O2 collects enough e- and H+ to become water
ATP is produced…
in glycolysis, Kreb Cycle and mainly in ETC due to chemiosmosis

26. Pyruvic acid is made …
at the end of glycolysis (3C)
NADH and FADH2 carry …
Electrons and H+ to the ETC
Protons (H+) build up in the …due to…
Intermembrane space, ETC pushing them out
ATP synthase allows H+ to … and …
Back into the matrix, produces ATPs
If no oxygen, yeast produce…
ethanol
If no oxygen, muscle cells produce…
Lactic acid

27. The ETC produces...
34 ATPs
In aerobic respiration, Pyruvic acid is converted to…
Acetyl CoA
The molecule that must be recycled in the Kreb cycle is…
Oxaloacetic acid
The break down of one glucose gives…
38 total ATP

28. Autotrophs…
Make their own food/chemical energy
Heterotrophs…
Must eat other things to obtain chemical energy
Aerobic respiration requires…
Oxygen

29. VIDEO LINKS
FROM FOOD TO ATP
Cellular Respiration Overview

30. Click a hyperlink to choose a video. Aerobic Respiration Glycolysis
Video Contents
Click a hyperlink to choose a video.
Aerobic Respiration
Glycolysis
Krebs Cycle, Part 1
Krebs Cycle, Part 2
Electron Transport Chain, Part 1
Electron Transport Chain, Part 2
Video Contents

31. Click the image to play the video segment.
Aerobic Respiration
Click the image to play the video segment.
Video 1

32. Click the image to play the video segment.
Glycolysis
Click the image to play the video segment.
Video 2

33. Click the image to play the video segment.
Krebs Cycle, Part 1
Click the image to play the video segment.
Video 3

34. Click the image to play the video segment.
Krebs Cycle, Part 2
Click the image to play the video segment.
Video 4

35. Click the image to play the video segment.
Electron Transport Chain, Part 1
Click the image to play the video segment.
Video 5

36. Click the image to play the video segment.
Electron Transport Chain, Part 2
Click the image to play the video segment.
Video 6

37. Go Online Links from the authors on Creatine Share kimchi lab data
Interactive test
For links on cellular respiration, go to and enter the Web Code as follows: cbn-3091.
For links on the Krebs cycle, go to and enter the Web Code as follows: cbn-3092.
Internet

38. This slide is intentionally blank.
End of Custom Shows