Biology is the study of living things and how they interact with their environment. Module 1: Development of Practical Skills in Biology. This module underpins the whole of the specification and covers practical skills that students develop throughout the course. Practical skills can be assessed within written examinations and practical endorsement. Module 2: Foundations in Biology. Students will cover cell structure, biological molecules, nucleotides and nucleic acids, enzymes, biological membranes, cell division, cell diversity and cellular organisation. Module 3: Exchange and Transport. In this module, students study the structure and function of gas exchange and transport systems in a range of animals and in terrestrial plants. Module 4: Biodiversity, Evolution and Disease. Students study the biodiversity of organisms; how they are classified and the ways in which biodiversity can be measured. This serves as an introduction to ecology, emphasising practical techniques and an appreciation of the need to maintain biodiversity. Module 5: Communications, Homeostasis and Energy. Living organisms, both plants and animals, must respond to stimuli, achieved by communication within the body, which may be chemical and or electrical. Both systems are covered in this module, along with studying the biochemical pathways of photosynthesis and respiration. Module 6: Genetics, Evolution and Ecosystems. This module covers the role of genes in regulating and controlling cell function and development. Heredity and the mechanisms of evolution and speciation are also covered.