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The immune system
Explain the body's three lines of defence — barriers, white blood cells and antibodies — and sequence a specific immune response.
⏱ 20 min❓ 8 questions
What you'll be able to do
- ✔I can describe the three lines of defence against pathogens
- ✔I can explain how phagocytes, lymphocytes and antibodies work
- ✔I can sequence a specific immune response and explain why a second infection is dealt with faster
How this works
- 1Read the short explanations first — they teach you what you need before each question.
- 2Answer each question, then tap Check. A right answer moves you on automatically; if it's wrong, you'll see a friendly explanation of why.
- 3Finish all 3 steps to see your score — sign in and subscribe to unlock the full lesson and save it.
What's inside
8 questions and 1 quick teaching card, including:
- 🔗Match the pairs — Choose the partner that goes with each item.
- ✅Select all that apply — More than one can be right — pick every option that fits.
👪Grown-up tip: sit alongside younger learners for the first few lessons. Read the questions together and chat about the explanations — that's where the real learning sticks.
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Curriculum: AC9S9U01