This is a quick guide to one of the units covered in National 5 biology. There is essential information on each sub-unit, with fill in the blanks and practice questions to test how much you've learned. There are plenty of diagrams to consolidate learning and clear headings to make sure you’ve covered everything. The guide contains only information you need to know which helps to focus revision time and cuts down on the workload. You’re also encouraged to make links between subtopics as this will be beneficial for the exam. This is the ideal revision tool for an individual sitting National 5 Biology.