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What is a hypotonic solution?
Lower solute concentration outside the cell; water enters the cell. Cell may swell and burst.
What happens to a cell in a hypotonic solution?
Water moves into the cell, causing it to swell and potentially burst (lyse).
Example of a hypotonic solution?
Example of a hypotonic solution?
What is a hypertonic solution?
Higher solute concentration outside the cell; water leaves the cell. Cell may shrink.
What happens to a cell in a hypertonic solution?
Water moves out of the cell, causing it to shrink and become crenated.
Example of a hypertonic solution?
Seawater (higher solute concentration than inside the cell).
What is an isotonic solution?
Equal solute concentration inside and outside the cell; no net water movement. Cell remains stable.
What happens to a cell in an isotonic solution?
Water moves in and out at the same rate; cell remains stable and unchanged.
Example of an isotonic solution?
0.9% sodium chloride (normal saline).
