Cell Processes

Mr. SkirbstLife Science

Topic 05

Cell Processes

The ways in which cells obtain and/or use energy

5 Cell Processes1. Metabolism

5 Cell Processes1. Metabolism- ALL chemical activities that

occur- Ability to change energy from

one form to another(ex. chemical – motion – heat)

5 Cell Processes2. Respiration

5 Cell Processes2. Respiration- Breaking down food (glucose)

into energyTWO kinds of respiration

5 Cell ProcessesAEROBIC respiration:- Requires oxygen (O2)

5 Cell ProcessesANAEROBIC respiration:- Requires NO oxygen (O2)

- Also called “fermentation”- (ex. Yeast – alcohol)

5 Cell Processes3. Diffusion

5 Cell Processes3. Diffusion- Movement from higher to

lower concentration levels- Requires NO energy input- (ex. Odors, liquids, etc.)

5 Cell Processes4. Osmosis

5 Cell Processes4. Osmosis- Diffusion of water into or out

of a cell- Requires NO energy input

5 Cell Processes5. Active Transport

5 Cell Processes5. Active Transport- Movement of materials into or

out of a cell- Requires energy