1. Cellular Respiration Overview
Living things get most of the energy they need from glucose.
Autotrophs make glucose using photosynthesis
Heterotrophs get glucose from food they eat
Cellular Respiration-The process that releases energy by breaking down glucose and other food molecules in the presence of oxygen.
Two Types
Aerobic-uses oxygen
Anaerobic- does not use oxygen

2. Cellular Respiration Overview
Cellular Respiration Overall Equation
6O2 + C6H12O6  6CO2 + 6H2O + Energy
Three Stages
Glycolysis- anaerobic
Kreb’s Cycle- aerobic
Electron Transport Chain- aerobic
The Main form of Energy produced = ATP

3. The Mitochondria
The mitochondria is the organelle where the final stages of cellular respiration occurs.
Kreb’s Cycle
Electron Transport Chain
Cells that use a lot of energy have high numbers of mitochondria.
Example: Muscle cells in the heart!!

4. Glycolysis Glyco = Glucose lysis = Breakdown
Occurs in the cytoplasm of the cell – NOT MITOCHONDRIA
Produces Energy Carrier Molecules
2 ATP

5. Overview Diagram

6. Kreb’s Cycle
Kreb’s Cycle - further breaks apart the pyruvates

7. Kreb’s Cycle Aerobic Process = Only if oxygen is present!!
Occurs in the MATRIX of the mitochondria
Makes 2 ATP

8. Overview Diagram

9. Electron Transport Chain
Occurs in the folds of the Inner Membrane of the Mitochondria (Cristae)
The ETC is aerobic (requires oxygen)
The ETC produces 32 ATP molecules

10. Fermentation The side effects of fermentation
How does anaerobic respiration work?
Fermentation
Occurs in the Cytoplasm (Just like glycolysis)
The side effects of fermentation
Plants produce ethanol alcohol
Animals produce lactic acid

11. The side effects of fermentation
Plants produce ethanol alcohol
Animals produce lactic acid

12. In Summary!!! Aerobic Respiration Anaerobic Respiration uses OXYGEN
Makes A LOT of energy! 34ATP
Takes place in the mitochondria in the Kreb’s cycle
and ETC
Anaerobic Respiration
Does not use oxygen
Takes place in the cytoplasm and is called glycolysis or fermentation (pyruvate)
Makes only a 2 ATP

13. Fermentation (without oxygen)
Chemical Pathways
Section 9-1
Glucose
Krebs cycle
Electron transport
Glycolysis
Alcohol or Lactic Acid
Fermentation (without oxygen)

14. Lactic Acid Fermentation Alcoholic Fermentation Aerobic Respiration
Draw
Glucose
2 pyruvate
No oxygen present
Oxygen present
Lactic Acid Fermentation
Alcoholic Fermentation
Aerobic Respiration

15. Without cell-respiration, we would never recycle the carbon back into the atmosphere for plants to make more sugar.