GCSE Biology Cheat Sheets

Revise GCSE Biology with free one-page cheat sheets. Each poster brings the key ideas from one topic together on a single page, so you can see how everything connects and spot anything you still need to learn.

GCSE Biology

Mitosis & the Cell Cycle
How one cell becomes two identical copies: chromosomes, the cell cycle, the four stages of mitosis, and why mitosis matters for growth, repair and reproduction.
Transport in Cells
Diffusion, osmosis and active transport - definitions, energy requirements, examples, and a comparison table of direction and what moves.
Enzymes
The lock-and-key model, denaturation, and how temperature, pH and substrate concentration affect rate of reaction.
Plant Cell Organisation
Cross-section of a leaf with labelled layers, vascular tissue (xylem and phloem), meristem tissue, stomata, guard cells and their key functions.
Vaccination
How vaccines work, the primary vs secondary immune response, memory lymphocytes, herd immunity, and examples of common vaccines.
Photosynthesis
The photosynthesis equation, where it happens in the leaf, uses of glucose, and the four limiting factors with their rate graphs.
Endocrine System
What the endocrine system is, the major glands and their hormones and effects, and how the nervous and endocrine systems compare.
Blood Glucose & Diabetes
How the pancreas regulates blood glucose via glucagon and insulin, negative feedback, and the causes and treatments of Type 1 and Type 2 diabetes.
Homeostasis
What homeostasis is, the negative feedback loop, receptors and effectors, and what gets controlled: body temperature, blood glucose, and water balance.