Diffusion - Biology: AQA A Level

Diffusion - Biology: AQA A Level simple diffusion The model covers diffusion in a container, diffusion across a cell membrane, and osmosis • Model takes just 20 minutes to build! Perfect for use in class or simple slots Simple diffusion is the process in which solutes are passed through the concentration gradient in a solution across a semipermeable membrane

simple slots Facilitated Diffusion: Facilitated diffusion is the process of spontaneous transport of molecules or ions across a cell's membrane via specific trans-membrane

simpleslots Movement of waste materials · In animals, the removal of waste materials occurs via simple diffusion · In the liver, waste material, urea, is  Simple diffusion allows the direct transport of molecules across the cell membrane In contrast, facilitated diffusion occurs via transmembrane proteins like