Biology is the study of life and enables you to learn what it is that makes life tick. Some of the things you study will be sub-microscopic, like the tiny protein pumps in the membrane of a living cell, a hundred thousand of which can be fitted into one millimetre. Some of the things you study will be vast, like the global ecosystem, struggling under the impact of human activities. In Biology A level, you will get a glimpse of some of the amazing design solutions that animals and plants have come up with in their struggle to survive. There is nothing as strange or fascinating as the reality of the living world.