- The movement of water, from a region of high water potential to a region of low water potential, down a concentration gradient, through a partially permeable membrane
- Water potential is the potential for water to move out of a solution
- WP is measure in KiloPascals
- Highest WP is 0 (distilled water)
Osmosis in Plant Cells
If water moves into the cell, it expands causing the cytoplasm to push against the cells wall - the pressure builds up resisting the entry of anymore water - becomes TURGID
INCIPIENT PLASMOLYSIS - the protoplast begins to peel away from the cell wall
PLASYMOLYSIS - the protoplast completely pulls away from the cell wall
Osmosis in Animal Cells
In HYPETONIC solutions the cell becomes CRENATED
In ISOTONIC solutions the cell remains the same
IN HYPOTONIC solutions LYSIS occurs in the cell
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