Movement of water from an area of a higher water potential to an area of lower water potential across a partially permeable membrane
Water potential
Pressure created by water molecules measured in kPa, pure water is 0 ans when solutes dissolve in water the water potential becomes negative, The more solutes dissolved the more negative water potential
Isotonic
Water potential the same in solution and in the cell within the solution
Hypotonic
Water potential more positive (higher) in solution than cell
Hypertonic
Water potential is more negative (lower) in solution than cell
Animal cells in hypotonic solution (eg pure water)
A lot of water will move into cell from solution via osmosis, due to a lack of cell wall, cell will burst
Animal and plant cells in hypertonic solution
Cell will shrink and shrivel due to large volume of water leaving cell via osmosis
