Going through past papers by topic often gives a useful insight into the thoughts of the examiners and how they see a topic and the emphasis they put on different parts of a specification. I have included the comments from the examiners reports,
Neurones and Action Potentials give an opportunity for examiners to get you to explain a graph (in terms of the flow of Sodium and Potassium ions through voltage gated channel) and to link that explaination to first year concepts of facilitated diffusion and active transport.
Here is a link to some questions with the markschemes
Please like and share (and click on a advert to help with the hosting costs !)