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Title: Interest Grabber


1
Interest Grabber
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, slowrun? 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 changesin how you
feel? 3. Think about running as fast as you can
for 100 meters. Could youkeep up this pace for a
much longer distance? Explain your answer.
2
Section Outline
Section 9-1
  • 91 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

3
Section Outline
Section 9-2
  • 92 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

4
Figure 92 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
5
Chemical Pathways
Section 9-1
Glucose
Krebs cycle
Electrontransport
Glycolysis
Alcohol or lactic acid
Fermentation (without oxygen)
6
Flowchart
Section 9-2
Cellular Respiration
Glucose(C6H1206) Oxygen(02)
Glycolysis
KrebsCycle
ElectronTransportChain
Carbon Dioxide (CO2) Water (H2O)
7
Figure 93 Glycolysis
Section 9-1
Glucose
2 Pyruvic acid
To the electron transport chain
8
Figure 93 Glycolysis
Section 9-1
Glucose
2 Pyruvic acid
To the electron transport chain
9
Figure 93 Glycolysis
Section 9-1
Glucose
2 Pyruvic acid
To the electron transport chain
10
Figure 96 The Krebs Cycle
Section 9-2
Citric Acid Production
Mitochondrion
11
Figure 96 The Krebs Cycle
Section 9-2
Citric Acid Production
Mitochondrion
12
Figure 97 Electron Transport Chain
Section 9-2
Electron Transport
Hydrogen Ion Movement
Channel
Mitochondrion
Intermembrane Space
ATP synthase
Inner Membrane
Matrix
ATP Production
13
  • WHAT IF THERE ISNT ANY OXYGEN?
  • CELLUAR RESPIRATION Anaerobic (fermentation)
  • yeast cells alcohol production
  • muscle cells lactic acid production

14
Figure 94 Lactic Acid Fermentation
Section 9-1
Lactic acid
Glucose
Pyruvic acid
15
Figure 94 Lactic Acid Fermentation
Section 9-1
Lactic acid
Glucose
Pyruvic acid
16
Figure 94 Lactic Acid Fermentation
Section 9-1
Lactic acid
Glucose
Pyruvic acid
17
Pros and Cons of Lactic Acid Fermentation
  • Pros your muscle will keep working even without
    sufficient oxygen

18
  • 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
19
  • VIDEO LINKS
  • FROM FOOD TO ATP
  • Cellular Respiration Overview

20
Video Contents
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

21
Video 1
Video 1
Aerobic Respiration
  • Click the image to play the video segment.

22
Video 2
Video 2
Glycolysis
  • Click the image to play the video segment.

23
Video 3
Video 3
Krebs Cycle, Part 1
  • Click the image to play the video segment.

24
Video 4
Video 4
Krebs Cycle, Part 2
  • Click the image to play the video segment.

25
Video 5
Video 5
Electron Transport Chain, Part 1
  • Click the image to play the video segment.

26
Video 6
Video 6
Electron Transport Chain, Part 2
  • Click the image to play the video segment.

27
Internet
Go Online
  • Links from the authors on Creatine
  • Share kimchi lab data
  • Interactive test
  • For links on cellular respiration, go to
    www.SciLinks.org and enter the Web Code as
    follows cbn-3091.
  • For links on the Krebs cycle, go to
    www.SciLinks.org and enter the Web Code as
    follows cbn-3092.

28
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