Liz looks at the structure of cell membranes for your A Level Biology exam. In this episode, she will look at the fluid mosaic model of cell membranes, cell membrane permeability and how you can use a beetroot to find out just how leaky a cell membrane is. Ideal for preparing for your A Level Biology exam. For more info visit https://www.senecalearning.com/blog/a-level-biology-revision/