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.
Topic Pages¶
- Cell Structure: Cell structure links what cells are made of to what they can do. It combines cell comparison, specialisation and microscopy, so it underpins later work on transport, division, organisation and disease.
- Cell Division: Cell division explains how organisms grow, repair damage and replace worn-out cells. The central idea is that genetic information must be copied accurately before one cell becomes two.
- Transport in Cells: Cells must exchange materials with their surroundings. Transport in cells compares three mechanisms for moving substances and explains why surface area matters so much for small organisms and specialised surfaces.