Osmosis Simulator
Each blue dot is dissolved solute. Change the concentrations and watch water move across the membrane.
solute particle water movement partially permeable membrane
Solution outside
20%solute concentration
Inside the cell
50%solute concentration
Hypotonic solution - the cell has more solute, so water moves IN and the cell swells (turgid).
Water moves by osmosis from a region of low solute concentration (high water potential) to a region of high solute concentration (low water potential) through a partially permeable membrane. The solute dots cannot cross the membrane - only water can.