Summary - Unit 2 - AQA Cells

These notes provide a clear and focused summary of Unit 2: Cells, based on the AQA A-level Biology specification. They cover the structure and function of eukaryotic and prokaryotic cells, including organelles such as the nucleus, mitochondria, ribosomes, and the cell-surface membrane. Key processes such as cell fractionation, the use of microscopes, and the principles of magnification and resolution are explained in detail. The content also includes the cell cycle, mitosis, and the regulation of cell division, as well as the structure and function of viruses and the immune response. With exam-relevant detail and precise definitions, these notes are designed to support understanding of cellular biology and prepare students for both short-answer and extended exam questions.