AP Biology Lab 1: diffusion and Osmosis. Essay by cutediva126, High School, 10th grade, February 2009. download word file, 1 pages, 3.0. Downloaded 17 times. Keywords relationship, conclusion, Hypothesis, presence, Concentration. 0 Like 0 Tweet. Lab 1: Diffusion and OsmosisPurpose:The purpose of this lab was to understand the mechanisms of diffusion and osmosis as well as there importance to.