1. Cells and their environment

2. Tonicity (root: tonic) Used to describe the environment around the cell. Environment can be: HYPERtonic = more solute HYPOtonic = less ISOtonic = same

3. Cell

4. Cell’s environment Solute = dissolved materials

5. Water Follows Solute

6. Cell swells. If the gradient is great enough, the cell will burst. Cell lysis = cell bursting = Hypotonic Environment

9. Crenation = cell shrinking = Hypertonic environment

10. Solute is equal inside and outside the cell.

11. Isotonic Environment