In the first year, Biology covers the biology of cells and how they are specialised for different functions. Transport and gas exchange systems rely on these specialised cells to function efficiently. The membranes both within and surrounding the cells are studded with proteins, and students will learn how these are involved in cell communication and defending against disease. Organisms show variation and the second unit looks at the genetic and environmental factors which cause variation. Similarities and differences are looked at both on a biochemical basis and at a cellular level. The second year of the Biology course covers populations and environment and control in cells and organisms. The course is very broad based and students are expected to apply their knowledge to new situations.