Getting in and out of cells 0.0 / 5 ? BiologyCells, tissues and organsGCSEAQA Created by: AmyCreated on: 22-01-14 22:07 Define diffusion The movement of particles through the air 1 of 9 If particles are clumped together, what kind of concentration will they have? High concentration 2 of 9 If particles are spread out, what kind of concentration will they have? Low concentration 3 of 9 What is the concentration gradient? The difference between high and low concentration 4 of 9 What would make the diffusion rate faster? A bigger difference in concentration 5 of 9 How do cell membranes allow diffusion to occur? They have tiny holes that allow dissolved substances in and out 6 of 9 What is meant by partially permeable? Only certain types of particles can get through (eg. no large particles) 7 of 9 Describe the net movement Movement of particles from a higher concentration to a lower concentration 8 of 9 Why do plants have a lower rate of diffusion? Because they do not respire as much as animals. 9 of 9
Comments
No comments have yet been made