Health, disease and the immune system
Learn Health, disease and the immune system for Year 9 pupils (ages 13–14). Free practice questions, lessons and worked examples — aligned to the UK National Curriculum.
What you'll learn
- 1
Communicable diseases spread between people. Non-communicable ones, like heart disease, do not.
- 2
A vaccine introduces a harmless form of a pathogen. White blood cells make antibodies and keep a memory, so a real infection is destroyed quickly.
- 3
What do antibiotics treat?
- 4
How does a vaccine protect you?
- 5
Apply it: a vaccine contains a dead or weakened pathogen. White blood cells make antibodies and memory cells. On real infection the response is much faster, so you do not become ill.
- 6
Why do antibiotics not work on a cold?
- 7
What does a vaccine actually do?
Practise Health, disease and the immune system with Whizlo
Free AI-tutored lessons, unlimited practice questions, and progress tracking for ages 13–14. Aligned to the UK National Curriculum.