Cells and their environment. Tonicity (root: tonic) Used to describe the environment around the cell. Environment can be: HYPERtonic = more solute HYPOtonic.

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Presentation transcript:

Cells and their environment

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

Cell

Cell’s environment Solute = dissolved materials

Water Follows Solute

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

Crenation = cell shrinking = Hypertonic environment

Solute is equal inside and outside the cell.

Isotonic Environment