1. Breathing and eating food are very closely related
Breathing and eating food are very closely related. Do you think this is true or false? Explain your answer.

2. Which statement do you most agree with? Explain your answer.

3. How our body makes ATP, ENERGY!!
Cellular Respiration
How our body makes ATP, ENERGY!!

4. ATP=
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5. November 22, 2018November 22, 2018

6. Electron Transport Chain
Flowchart
Section 9-2
Cellular Respiration (3-stages)
Carbon
Dioxide
(CO2) +
Water
(H2O)
ATP
Glucose (C6H1206) +
Oxygen (02)
Glycolysis
Krebs Cycle
Electron Transport Chain

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8. To the electron transport chain
Figure 9–3 Glycolysis
Glycolysis:
Step 1
Glucose
2 Pyruvic acid
Glycolysis is a metabolic pathway that takes place in the cytosol of cells in all living organisms. This pathway can function with or without the presence of oxygen. In humans, aerobic conditions produce pyruvate and anaerobic conditions produce lactate.
To the electron transport chain

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

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

11. Glycolysis: November 22, 2018November 22, 2018 Where Cytoplasm
NO O2 required
Energy Yield net gain of 2 ATP at the expense of 2 ATP
6-C glucose  TWO 3-C pyruvates
Free e- and H+ combine with organic ion carriers called NAD+  NADH + H+
(nicotinamide dinucleotide)
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12. Summary In Glucose (6-C) 2 ATP Out 2 pyruvate; 2(3-C) 2NADH
a net of 2 ATP
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13. Questions November 22, 2018November 22, 2018
Where does glycolysis take place?
Glycolysis energy yield?
Breaks glucose into TWO ________.
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14. November 22, 2018November 22, 2018

15. Citric Acid Cycle (Krebs Cycle)
Where Mitochondrial matrix
Energy Yield 2 ATP and more e-
Pyruvic acid  Acetyl-CoA  CITRIC ACID
Gives off a CO2 molecule
NAD+ and FAD pick up the released e-
Cycle ALWAYS reforming a 4-C molecule
Acetyl-CoA (2-C) combines with 4-C to form 6-C CITRIC ACID
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16. The Krebs Cycle
Section 9-2
Citric Acid Production
Mitochondrion

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

18. Summary Out In CO2 (as waste) Pyruvate NADH NAD Acetyl-CoA CoA
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19. Krebs Cycle
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20. The Krebs Cycle
Section 9-2
Citric Acid Production
Mitochondrion

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

22. ETC Where inner membrane of mitochondria
Energy Yield Total of 32 ATP
O2 combines with TWO H+ to form H2O
Exhale - CO2, H2O comes from cellular respiration
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23. Electron Transport Chain
Section 9-2
Electron Transport
Hydrogen Ion Movement
Channel
Mitochondrion
Intermembrane
Space
ATP synthase
Inner
Membrane
Matrix
ATP Production

24. Total ENERGY Yield
Glycolysis 2 ATP
Krebs Cycle 2 ATP
ETC  32 ATP
Total 36 ATP
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25. What happens if NO O2? Cellular respiration process STOPS
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26. Aerobic vs. Anaerobic ATP, ATP, ATP Anaerobic DOES NOT require oxygen
Simple
fast
produces smaller amounts of energy (ATP)
Aerobic requires oxygen
Yields large amounts of energy
What is this energy molecule?
ATP, ATP, ATP
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27. November 22, 2018November 22, 2018

28. Releasing Energy w/out Oxygen
Anaerobic Respiration
NO Additional ATP is Formed
NO O2 leads to Fermentation
Two Types
Lactic Acid Fermentation
Alcoholic Fermentation
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29. Lactic Acid Fermentation
bacteria, plants and most animals
After glycolysis
2 pyruvic acid changed to lactic acid
Sometimes happens in your muscles, cramps-----Exercise
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30. November 22, 2018November 22, 2018

31. Alcoholic Fermentation
Bacteria and fungi (yeast)
Ethyl alcohol and carbon dioxide are the end products
Process used to form beer, wine, and other alcoholic beverages
Also used to raise dough, bread
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32. Cellular Respiration Review
Three Main Stages
Glycolysis (2 ATP)
Kreb’s Cycle (2 ATP)
Electron Transport Chain (32 ATP)
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