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Osmosis Notes. If you are stranded on a raft in the ocean, is it better to drink the salt water or no water at all?. The diffusion of water through a selectively permeable membrane. Only water moves during osmosis. Nothing else.

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osmosis notes

Osmosis Notes

If you are stranded on a raft in the ocean, is it better to drink the salt water or no water at all?

slide2
The diffusion of water through a selectively permeable membrane.

Only water moves during osmosis. Nothing else.

Water continues to move until equilibrium is reached on both sides of the membrane.

placing a cell in an isotonic solution
Placing a cell in an isotonic solution:

Isotonic means Same Strength

Concentration of particles is the same inside and outside of the cell.

Equilibrium exists but nothing happens to the appearance of the cell.

placing a cell in a hypertonic solution
Placing a cell in a Hypertonic solution

Hypertonic means Above Strength

Solution has a higher particle concentration than the cell.

Water moves out to try to balance.

Cell Shrivels!!!

placing a cell in a hypotonic solution
Placing a cell in a Hypotonic Solution.

Hypotonic means below strength

Solution has a lower solute concentration than the cell.

Water moves into the cell to try to balance.

The cell plumps up!!!

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