1. Cellular Respiration

2. Vocabulary
Anaerobic- without oxygen
Aerobic- with oxygen

3. Cellular Respiration
The process by which living things release the energy (ATP) stored in organic molecules

4. Equation
C6H12O6 + 6O > 6CO2 + 6H20 + energy (heat and ATP)

5. Cell Respiration

6. Glycolysis aka: Step 1
A series of 10 reactions
The process breaks down glucose into 2 pyruvate molecules and 2 ATP
Occurs in cytosol/cytoplasm

7. Glycolylsis
Glucose (6 carbon sugar) is broken down into 2 Pyruvate acids (3 carbon sugars)

8. Glycolysis

9. Fermentation aka: Step 1.5
The process by which pyruvate is converted in the absence of oxygen into either alcohol or lactic acid

10. Alcohol Fermentation

11. Lactic Acid Fermentation

12. Fermentation Plant Vs. Animal
Alcohol Fermentation
Creates CO2
EX= Root beer and ethanol
Lactic Acid Fermentation
No CO2
EX= Muscle Aches and cheese

14. Availability of Oxygen AKA: Aerobic Respiration
If no oxygen is available- the process stops.
If oxygen becomes available, the process moves onto oxidative reduction & the kreb’s cycle.
Possible for 36 ATP to be made.

15. Oxidative Reaction
The process by which pyruvate is broken down in the presence of oxygen into a two-carbon molecule (acytl COA) which enters the Krebs cycle.

16. Oxidative Reduction Continued
Carbs are broken down into water and CO2.
Removal of H+ = Oxidation
Addition of H+= Reduction
OIL RIG

18. Krebs cycle aka: Step 2
H+ is added to NAD+
NADH is produced to supply the electron transport system
Occurs in mitochondrial matrix

19. Krebs cycle cont.
The two-carbon fragment joins with a four-carbon sugar. Eight additional reactions occur releasing carbon dioxide and 2 ATP

20. Krebs cycle
The NADH transports hydrogen atoms and electrons to the electron transport chain
ATP is generated and the hydrogen joins oxygen
2 H+ + O H2O(water)

22. Simple Krebs Cycle

23. Products of Krebs Cycle
1 glucose= 2 turns on the cycle
Plus- 6NADH, 2FADH, 2ATP and acetyl co A.

24. Electron Transport Chain

25. Electron Transport Chain aka: Step 3
NADH2 releases H+ and e- are transferred to e- acceptors.
E- get passed along in redox reactions. (hot potato)
Most (34) ATP is made here

26. E.T.C. cont.
When e- run out of energy, oxygen binds with H+ to form water.

27. E.T.C. Drawing

28. ATP
In the presence of oxygen, up to 36 additional ATP are produced

29. ATP Yield Glycolysis= 2 ATP Kreb Cycle = 2 ATP E.T.C. = 34 ATP
____________________
Total Possible = 38 ATP

32. One More Time

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