Diffusion 2.5 / 5 based on 2 ratings ? BiologyExchange of materialsGCSEAQA Created by: ElleCreated on: 07-11-12 19:48 Define Diffusion Diffusion is the spreading out of particles from an area of high concentration to one of low concentration 1 of 5 Where does diffusion happen? Solutions and gases 2 of 5 Why does this happen here? Because of the free particles 3 of 5 The bigger the difference in concentration The faster the diffusion rate 4 of 5 What is the relevance of cell membranes to diffusion? Dissolved substances can move in and out of cells by diffusion 5 of 5
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