This document consists of in depth notes written to equip you with all the knowledge required to achieve high results in Biology AS / A-level exams, written by a biology student who took her exams in summer of 2022. With these notes as my main source of revision, I achieved an A* and believe that is achievable for you too. These notes are written with colour and are easy to digest with the use of diagrams, and in depth explanations of the core parts of this A-level course.