1. Cell Processes Mr. Skirbst Life Science Topic 05

2. Cell Processes The ways in which cells obtain and/or use energy

3. 5 Cell Processes 1.Metabolism

4. 5 Cell Processes 1.Metabolism - ALL chemical activities that occur - Ability to change energy from one form to another (ex. chemical – motion – heat)

5. 5 Cell Processes 2.Respiration

6. 5 Cell Processes 2.Respiration - Breaking down food (glucose) into energy TWO kinds of respiration

7. 5 Cell Processes AEROBIC respiration: - Requires oxygen (O 2 )

8. 5 Cell Processes ANAEROBIC respiration: - Requires NO oxygen (O 2 ) - Also called “fermentation” - (ex. Yeast – alcohol)

9. 5 Cell Processes 3.Diffusion

10. 5 Cell Processes 3.Diffusion - Movement from higher to lower concentration levels - Requires NO energy input - (ex. Odors, liquids, etc.)

11. 5 Cell Processes 4.Osmosis

12. 5 Cell Processes 4.Osmosis - Diffusion of water into or out of a cell - Requires NO energy input

13. 5 Cell Processes 5.Active Transport

14. 5 Cell Processes 5.Active Transport - Movement of materials into or out of a cell - Requires energy