4.1 Cell Biology¶
This topic area explains how cells are built, how they divide, and how substances move across cell membranes. It establishes the cellular ideas that later topics keep reusing.
Core Role¶
- Establish the cell as the basic unit of life.
- Link visible cell structures directly to function.
- Provide the foundation for division, transport, organisation and genetics later in the course.
Learning Objective Map¶
Each topic page in this module now opens with a specification-aligned Learning Objectives section. Use these links to jump straight to the objective map for each topic, then into the teaching sections linked from that map.
| Topic | Objective map focus |
|---|---|
| 4.1.1 Cell Structure | cell types and scale; sub-cellular structures; specialisation and differentiation; microscopy; aseptic culturing |
| 4.1.2 Cell Division | chromosomes and genes; cell-cycle stages; mitosis for growth and repair; stem-cell roles and uses |
| 4.1.3 Transport in Cells | diffusion and rate factors; exchange surfaces; osmosis practicals; active transport compared |