1. Learning Targets
Explain how cellular respiration converts stored chemical energy in food molecules to energy used by the organism to maintain life.
Distinguish key differences between aerobic and anaerobic respiration in the use of oxygen and energy production.

2. Cellular Respiration

3. 
Respiration
AND
Respiration – the biochemical process that makes ATP from glucose
Occurs in both autotrophs and heterotrophs.

4. 
Respiration
There are two types of respiration, AEROBIC and ANAEROBIC.
Aerobic respiration requires OXYGEN to release energy.
The chemical equation for aerobic respiration is:
C6H O2  6H2O + 6CO ATP
Glucose Oxygen Water Carbon Dioxide Energy

5. 
Respiration
Anaerobic respiration DOES NOT REQUIRE OXYGEN. (Also called FERMENTATION)
Both aerobic and anaerobic respiration begin with the same process, glycolysis.

6. 
Glycolysis
Occurs in CYTOPLASM
Means “split the sugar,”

7. 
Glycolysis 2
Glucose
Glycolysis

8. Mitochondria Double membrane outer membrane inner membrane
highly folded cristae
enzymes & transport proteins

9. Aerobic Respiration  Occurs in the MITOCHONDRIA
Krebs Cycle: Occurs in Mitochondrial Matrix. Produces large quantity of electron carriers that will be used in the electron transport chain to power it.
Electron Transport Chain: Occurs in cristae (folded inner membrane) of mitochondria. Produces water and 36 ATP.

10. 
Aerobic Respiration
Electron Transport Chain:

11. 
Aerobic Respiration
The end product of aerobic respiration is the production of 36 ATP MOLECULES and WATER.

12. Aerobic Respiration  2 36 Glucose Glycolysis Glucose Glycolysis
Krebs cycle
Electron transport

13. Anaerobic Respiration
Anaerobic Respiration
Occurs in the CYTOPLASM.
Occurs in the absence of oxygen

14. Anaerobic Respiration
Anaerobic Respiration
Lactic acid Fermentation- Lactic acid and CO2 are produced.
Lactic acid can build up in muscles when they run out of oxygen and causes muscle soreness
Alcoholic fermentation- Ethanol and CO2 are produced.
Process used to make wine, beer, cheese, and bread
Both processes result in the production of only 2 ATP MOLECULES.

15. Factors Affecting Respiration:
Factors Affecting Respiration:
ATP concentration - the more ATP molecules available, the slower the rate of respiration.

16. Anaerobic Respiration
Anaerobic Respiration
Glucose
Glycolysis
Krebs cycle
Electron transport 2 36
Fermentation (without oxygen)
Alcohol or lactic acid