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Key Summary: This video covers AS Level Biology 9700 – The Mitotic Cell Cycle, explaining how cells grow, replicate DNA, and divide to produce genetically identical daughter cells. Learn the stages of the cell cycle — interphase, mitosis, and cytokinesis — and understand the importance of cell division in growth, repair, and asexual reproduction. Explore the details of interphase, including DNA replication, chromosome duplication, and organelle synthesis, followed by the stages of mitosis: prophase, metaphase, anaphase, and telophase. Understand the formation and function of spindle fibres, centrioles, and the nuclear envelope, and how chromosomes align, separate, and move to opposite poles of the cell. The lesson also explains the differences between mitosis and meiosis, highlighting how mitosis maintains chromosome number while ensuring genetic stability. Learn how the mitotic index is calculated, and how cell division is controlled by checkpoints and regulatory proteins such as cyclins. Understand the significance of uncontrolled cell division and its link to cancer and tumour formation. This topic builds a strong foundation for understanding genetics, cell differentiation, and tissue growth. Visual diagrams and animations demonstrate chromosome movements and nuclear division, helping you visualize each stage of mitosis clearly. Ideal for students preparing for Cambridge International AS and A Level Biology (9700), this video supports Paper 1 multiple choice, Paper 2 structured, and Paper 3 practical questions. It also includes common exam-style questions, past paper links, and data analysis tips. Perfect for self-study, revision, and classroom learning, this lesson strengthens conceptual understanding of cell cycle control, DNA synthesis, chromosome behavior, and cytokinesis. Subscribe for more detailed topic explanations, A Level Biology tutorials, and complete 9700 revision guides.
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