1. Do you think plant cells and animal cells behave in the same way regarding cell energy?

2. Cellular Respiration
Cellular Respiration – the process by which cells use oxygen to produce energy from food; a chemical process that occurs in cells
“Respiration” in this sense is the provider of oxygen for the cell; the cell is not actually breathing
Takes place mostly in the mitochondria of eukaryotic cells

3. Cellular Respiration Formula
Reactants
Reactants
Products
C6H12O6 + 6O2 
(ATP)
6CO2 + 6H2O + energy
Do you notice anything familiar about this equation?

4. Photosynthesis & Respiration
Reactants
Each process makes the materials that are needed for the other process to occur.
It is a cycle; carbon cycle

5. Reactants

6. Energy From Food Reactants
Fermentation – the breakdown of food without the use of oxygen
When you are running or working out and feel a burning pain in your legs? This is the result of fermentation.
Your cells can’t get the necessary oxygen needed for cellular respiration, so they use fermentation to get that energy; produces lactic acid