Answer:
Hypotonic solutions cause a cell to swell.
Isotonic solutions don't change the shape of the cell.
Hypotonic solutions and hypertonic solutions cause osmosis.
Hypertonic solutions cause a cell to shrink.
Step-by-step explanation:
Hypotonic solutions means there is less solute and more water compared to the cell, so the water will follow the solute in the cell and cause the cell to swell.
Isotonic solutions have the same water: solute concentration as the cell, so no osmosis occurs and the cell doesn't change size.
Hypertonic solutions have more solute concentration in the solution compared to the cell, so the water in the cell will follow the solute outside the cell and leave the cell, causing the cell to shrink.
Osmosis is when water diffuses to equilibrium; since isotonic solutions are at equilibrium no osmosis occurs, but since the hypotonic and hypertonic solutions have an imbalance in solute and water concentrations, osmosis does occur.