Biology is the study of living organisms and how they interact with each other and their environments; it is a multidisciplinary subject that is made of many fields. Biology explores the construction of living systems, how they develop, communicate, interact, reproduce, defend themselves, and shape the biophysical environment around them. Biologists are constantly looking to understand links between different disciplines of biology. A-Level Biology is made up of major core components such as cell biology, biochemistry, physiology, microbiology, genetics, ecology and evolution. The science of Biology is undergoing an incredible and exciting revolution in our understanding, one that started in the 20th Century with the elucidation of the structure of DNA, and now continues in the 21st century with the completion of the Human Genome Project, and the emergence of disciplines such as proteomics, genomics and synthetic biology. The subject of biology is never dull or static - for example, there is incredible excitement and anticipation around projects such as the USAs BRAIN Initiative and the EU’s Human Brain Project, both of which seek to unravel the brain’s neuronal map.