diffusion 0.0 / 5 ? BiologydiffusionGCSEEdexcel Created by: s0phlouiseCreated on: 30-03-14 14:12 diffusion is.. the spreading out of particles from an area of high concentration to an area of low concentration 1 of 5 diffusion happens in.. liquids and gases 2 of 5 this is because... the individual particles are free to move around randomly. 3 of 5 what can very small molecules do? diffuse through cell membranes (e.g. sugars, water, ions) 4 of 5 big molecules can't??? pass through the membrane (e.g. starch and proteins) 5 of 5
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