A cell placed in solution swells up. The solution is:

In the hypotonic solution, the cell will gain water by osmosis and will swell up.


Hypertonic solution is the one that contains more concentration of solutes relative to the solute concentration in the cytoplasm of the cell.

  • When cells are put in such a solution, water molecule shift from their higher concentration to their lower concentration.
  • This movement of the water molecule is called osmosis, and it is because everything in the universe tries to reach an equilibrium.
  • The solution outside the cell has a higher soluble concentration than inside the cell. Thus, the water molecules move outside the cell from inside.

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