The AQA Biology course is practical-based and combines the study of basic biological topics with recent scientific developments and advances. At AS level, the course consists of units on ‘Biology and disease’ (Biol1) and ‘The variety of living organisms’ (Biol2), which include physiological and biochemical concepts, as well as genetic applications and ecological principles. A2 students focus on ‘Populations and environment’ (Biol4) and ‘Control in cells and in organisms’ (Biol5), concentrating on the ecological balance between ecosystems and human activities, and the function and control of cells, tissues and organs. Additionally, there are practical assignments in both years (Bio3 and Bio6), which are designed to sharpen investigative skills, as well as field trips to accompany and consolidate ecological topics. AQA Biology allows biological principles to be presented in an exciting context that is both relevant and challenging. The course emphasises the way in which biologist work and the varied contributions they make to modern society in a scientifically and intellectually rigorous way, stimulating concern and respect for life, developing investigative skills and increasing understanding of scientific principles