Download osmosis cells

How Cells Deal with
Osmosis
Contractile Vacuole
• Organelles that collect and pump water
out of the cell
• Requires energy
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YouTube - Paramecium.webloc
Turgor Pressure
• Most plant cells live in a hypotonic
environment
– Swell as they fill with water
• Pressure of the water molecules
exerted against the cell wall of plants.
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YouTube - Turgor pressure#E0316
Plasmolysis
• In a hypertonic environment, water
leaves the cells
• Turgor pressure is lost
– Cells wilt
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YouTube - Onion Cells Pla#E0349
Cytolysis
• Some cells can not compensate for
changes in solute concentration
• They swell and burst
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Video Clips.webloc