How to take notes without writing loads? Watch
surface area = SA
voltage gated sodium channels = VGSC
concentration = conc.
also read and understand everything before you start your notes, then everything you already have prior knowledge about (like what is a concentration gradient) just ignore that or put like one bullet point on it, anything actually relevant write it.
Make notes that ANSWER the specification point
so if the spec point is "why do large organisms require transport systems"
write why they require transport systems, don't copy out the entire spread about what large organisms are, what transport systems are etc, only why they are required by large organisms, in bullet points