1. Anaerobic Respiration– Cellular Respiration Without Oxygen
Packet #14
Chapter #4

2. Anaerobic Respiration I
For most animal and plant cells, glycolysis is only a prelude {first set of stages} to the final stages of the breakdown of food molecules.
In animals, such as humans, oxygen is used in later stages to complete the breakdown of food molecules.

3. Anaerobic Respiration II
However, for organisms that do not use oxygen, and are able to grow and divide without it, glycolysis is the principle source of a cell’s ATP.

4. Anaerobic Respiration II
If no oxygen is available, the pyruvates formed at the end of glycolysis do not enter the Kreb’s Cycle but follow other pathways known fermentation pathways.

5. Anaerobic Fermentation IV
There are two fermentation pathways
Lactate Acid fermentation
Produces lactic acid
Causes cramps in muscles
Alcoholic fermentation
Produces ethanol & CO2
Produced by yeast cells
Helps rise bread during baking.

6. Review