OCR AS Level Biology B (Advancing Biology) Past Papers

OCR AS Level Biology B (Advancing Biology) (H021) takes a conceptual, skills-first approach to biological science, emphasising scientific enquiry, practical reasoning, and the interpretation of real research data throughout both assessed components. The qualification is developed around the principle that students learn biology most effectively when they understand why scientists reached their conclusions, not merely what those conclusions are. Paper 1: Foundations of Biology (H021/01, 1 hour 30 minutes, 70 marks) covers the core biological content: the chemistry of life (water properties, carbohydrates, lipids, proteins, and nucleic acids), cells and microscopy (eukaryotic and prokaryotic cell structures, the ultrastructure revealed by electron microscopy), biological transport (cell membrane structure, passive and active transport mechanisms), cellular energy (an overview of photosynthesis and aerobic respiration), and genetics (the structure of DNA, the cell cycle, and the principles of inheritance at AS level). An insert booklet accompanying this paper provides data, graphs, or unfamiliar research scenarios that some questions draw upon. Paper 2: Biology in Depth (H021/02, 1 hour 30 minutes, 70 marks) pushes into applications of biology at greater analytical depth. It covers biodiversity (classification systems, sampling techniques, and the measurement of species diversity), evolution (natural selection, evidence from the fossil record, and genetic drift), disease and immunity (the mechanisms of specific and non-specific immunity, the distinction between antigens and antibodies, and the cellular basis of immune memory), exchange and transport (gas exchange in humans, fish, and insects; transport systems in mammals and plants), and ecological relationships. The insert booklet for this paper typically contains an extended research passage or experimental dataset.