Diffusion, osmosis and active transport 3.0 / 5 based on 1 rating ? BiologyRespiration and exerciseGCSEAQA Created by: JackCreated on: 15-03-13 18:58 What is diffusion? Diffusion is the net movement of particles from an area of high concentration to an area of low concentration 1 of 5 Is diffusion a passive or active process? Passive (it uses no energy) 2 of 5 Why does active transport need energy from respiration? It takes energy to move particles against the concentration gradient 3 of 5 What is a simple definition of osmosis? Diffusion for water (the net movement of particles from an area of high concentration to an area of low concentration) 4 of 5 Name three places where active transport occurs. Root hairs, villi (in the intestine), blood capillaries 5 of 5
Comments
No comments have yet been made