AP Biology Lab Review Lab 1: Diffusion & Osmosis Lab 1: Diffusion & Osmosis Description dialysis tubing filled with starch-glucose solution in beaker filled with KI solution potato cores in sucrose solutions determining solute concentration of different solutions Lab 1: Diffusion & Osmosis Concepts semi-permeable membrane diffusion osmosis solutions hypotonic hypertonic isotonic water potential Lab 1: Diffusion & Osmosis Conclusions water moves from high concentration of water (hypotonic=low solute) to low concentration of water (hypertonic=high solute) solute concentration & size of molecule affect movement through semi-permeable membrane Lab 1: Diffusion & Osmosis ESSAY 1992