diffusion

• what is diffusion? net movement of particles from an area of high to low concentration through a partially permeable membrane
• TRUE OF FALSE diffusion can only happen in gases FALSE- gases and liquids
• what is meant by a partially permeable membrane? only some molecules can diffuse through them like h20 glucose and amino acids(small molecules)
• whar does it mean that diffusion is a passive process doesn't require any energy from the cell
• 3 factors that affect the rate of diffusion concentration gradient- difference in conc between 2 places (bigger difference in conc= more faster diffusion) temperature = high temp - more particles have KE- more particles will move around more quickly - more diffusion SA - larger the surface area the higher the rate of diffusion - more particles can fit if theres bigger space so more particles can diffuse in