Liz looks at monomers and polymers for your A Level Biology exam. In this episode, she will look at what monomers and polymers are, and some examples of the two. Ideal for preparing for your A Level Biology exam. For more info visit https://www.senecalearning.com/blog/a-level-biology-revision/  

Liz will explain everything you need to know about how the human immune system works for your A Level Biology exam. She will look into how the different components of the immune system work together to fight infection and what happens when the immune system goes wrong.