IB Diploma HL Biology Exam Technique Cheat Sheet 2026 (DP-BIO-HL)
Every IB Diploma HL Biology command word decoded — what examiners actually want, the structure that earns full marks, the top mistakes flagged in real examiner reports, and the phrases that pick up the marks others leave on the table. Free printable PDF.
6 command words decoded
5 top mistakes flagged
Phrases that earn marks
Print-ready PDF
Command words — click to expand
Top tips for Biology
- 1IB defines command terms in 3 AO groups: AO1 (knowledge), AO2 (application), AO3 (synthesis/evaluation). Know which one each question targets.
- 2Define vs outline vs describe: each demands a different depth — read the command term carefully.
- 3For long-response questions (extended): plan 6+ distinct points before writing.
- 4Use named structures (ribosomes, chloroplasts, hydrogen bonds) — not generic 'molecules'.
- 5ATL skills (research, communication): reference data sources in evaluation questions.
⚠️ Top mistakes examiners flag for Biology
- ✗Confusing 'outline' (brief) with 'describe' (detailed) — answering at the wrong depth.
- ✗Treating 'explain' as 'describe' — explain demands reasons (AO2), describe does not.
- ✗Forgetting that 'discuss' (AO3) requires both sides + a conclusion.
- ✗Using generic terms instead of named IB Biology guide vocabulary.
- ✗Skipping the chain of reasoning — each link is a mark.
✅ Phrases that earn marks
- → …the substrate is complementary in shape and charge to the active site
- → …ATP is hydrolysed, releasing energy
- → …by chemiosmosis: H⁺ flow through ATP synthase drives ATP synthesis
- → …osmosis: water moves from high to low water potential through a partially-permeable membrane
- → …depolarisation occurs as Na⁺ ions enter the axon through voltage-gated channels
❌ Phrases that lose marks
- ✗ Particles move (use named molecules / ions)
- ✗ Stuff goes through the membrane
- ✗ Cells make energy (use 'cellular respiration releases energy from glucose')
- ✗ Vague: 'parts', 'things', 'stuff'
Extended answers are where the marks live in Biology
IB Diploma HL Biology 6-mark and extended-response questions are won or lost on STRUCTURE and command-word interpretation. A Tutopiya Biology specialist marks your mock answers like an examiner and shows you exactly which command words you're misreading. Submit a free enquiry to get matched.
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IB Diploma HL Biology exam technique — FAQ
What are the most important command words in IB Diploma HL Biology? ▼
IB Diploma HL Biology (DP-BIO-HL) papers use 6 core command words. The most frequently misread are Define (AO1) (where students add unnecessary explanation) and Explain (AO2) (where students describe instead of reasoning with because/therefore). The full breakdown — what each word means, the answer structure, and the do/don't list — is in the interactive cheat sheet above.
What's the difference between "describe" and "explain" in IB Diploma HL Biology? ▼
Describe asks WHAT happens — quote values from data, state the trend, no reasoning. Explain asks WHY — every sentence must contain "because", "therefore" or "as a result". Mixing them up is one of the highest-frequency reasons IB Diploma HL Biology students lose marks they could have earned with the same content.
What are the top examiner-flagged mistakes for IB Diploma HL Biology? ▼
Across recent IB Diploma HL Biology examiner reports, the most-flagged mistakes are: Confusing 'outline'; Treating 'explain' as 'describe'; Forgetting that 'discuss'. The full list with explanations is in the "Top mistakes" block in the cheat sheet above.
Can I print the IB Diploma HL Biology exam technique cheat sheet as a PDF? ▼
Yes — click the "Download Biology Cheat Sheet PDF" button above. Sign up free (no payment), and the printable A4 PDF downloads instantly. The PDF includes the command-word table, top tips, common mistakes and the earn/avoid phrase pairs — designed to fit on one page so you can pin it above your desk.
Will this cheat sheet help me get a top grade in IB Diploma HL Biology? ▼
The cheat sheet covers EXAM TECHNIQUE — how to read command words, structure answers, and use mark-scheme language. Combined with strong subject knowledge it can lift students by 1–2 grades by closing the gap on extended-response questions. Use the IB Diploma HL Biology Grade Predictor to see where you currently sit and how many marks you need for the next grade up.
Is this IB Diploma HL Biology cheat sheet free? ▼
Yes — fully free. Sign up takes 10 seconds (name + email) and unlocks the PDF download for this and every other Tutopiya study tool. We use the email to send occasional IB Diploma HL Biology revision resources and exam updates. Unsubscribe at any time.
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