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A-level Biology · AQA 7402

3.2 Cells: AQA A-level Biology video lessons

Cell structure, microscopy, the cell cycle and mitosis, membranes and transport, and the immune response.

3.2.1 Cell structure

  1. Nucleus, Mitochondria and Chloroplasts

    AQA 7402 · 3.2.1.13:534 marks

  2. Rough ER, Golgi and Lysosomes Explained

    AQA 7402 · 3.2.1.13:544 marks

  3. Cell Wall, Vacuole and Specialised Cells

    AQA 7402 · 3.2.1.13:434 marks

  4. Prokaryotic vs Eukaryotic Cells

    AQA 7402 · 3.2.1.24:374 marks

  5. Viruses: Structure and Non-Living Status

    AQA 7402 · 3.2.1.22:204 marks

  6. Optical, TEM and SEM Microscopes Compared

    AQA 7402 · 3.2.1.33:434 marks

  7. Magnification vs Resolution Calculations

    AQA 7402 · 3.2.1.34:49Maths skill4 marks

  8. Cell Fractionation and Ultracentrifugation

    AQA 7402 · 3.2.1.33:515 marks

3.2.2 All cells arise from other cells

  1. Mitosis and the Cell Cycle: Stages

    AQA 7402 · 3.2.24:474 marks

  2. Cancer: Uncontrolled Cell Division

    AQA 7402 · 3.2.22:274 marks

  3. Binary Fission and Virus Replication

    AQA 7402 · 3.2.23:235 marks

  4. Required Practical 2: Root Tip Squash

    AQA 7402 · 3.2.24:13Required practical 2Maths skill5 marks

3.2.3 Transport across cell membranes

  1. Fluid-Mosaic Model: Cell Membrane Structure

    AQA 7402 · 3.2.33:594 marks

  2. Simple vs Facilitated Diffusion

    AQA 7402 · 3.2.33:384 marks

  3. Osmosis and Water Potential Explained

    AQA 7402 · 3.2.34:424 marks

  4. Active Transport and Co-transport (Ileum)

    AQA 7402 · 3.2.34:355 marks

  5. Why Cells Transport Faster: Microvilli

    AQA 7402 · 3.2.34:244 marks

  6. Required Practical 3: Water Potential

    AQA 7402 · 3.2.34:37Required practical 3Maths skill4 marks

  7. Required Practical 4: Membrane Permeability

    AQA 7402 · 3.2.34:29Required practical 4Maths skill4 marks

3.2.4 Cell recognition and the immune system

  1. Antigens and Cell Recognition

    AQA 7402 · 3.2.43:384 marks

  2. Phagocytosis: How Phagocytes Work

    AQA 7402 · 3.2.43:384 marks

  3. T Lymphocytes: The Cellular Immune Response

    AQA 7402 · 3.2.44:405 marks

  4. B Cells, Clonal Selection and Antibodies

    AQA 7402 · 3.2.44:595 marks

  5. Primary and Secondary Immune Response

    AQA 7402 · 3.2.43:504 marks

  6. Vaccines, Herd Immunity, Active vs Passive

    AQA 7402 · 3.2.44:114 marks

  7. HIV Replication and How It Causes AIDS

    AQA 7402 · 3.2.44:185 marks

  8. Monoclonal Antibodies in Medicine

    AQA 7402 · 3.2.43:304 marks

  9. The ELISA Test Explained

    AQA 7402 · 3.2.44:025 marks

  10. Vaccine and Antibody Ethics and Evidence

    AQA 7402 · 3.2.43:494 marks