Edexcel IAL Biology · AS + A2 · Units 1–6 (WBI11–WBI16) · 2019–2026
Every Edexcel IAL Biology Past Paper, Solved the Way Examiners Actually Mark Them
AS and A2 fully solved and classified past papers with model answers in mark-scheme language — plus a practice app and video explanations — covering all six units, including the statistics and practical papers.
Watch: a 2-minute tour of the solved past papersWatch on YouTube
Every exam series — nothing missing
2019 →
2026
Every past paper from 2019 right up to the most recent 2026 sessions — fully solved and classified. The latest papers are the ones free sites never post, and they are the truest rehearsal for the exam your child actually sits.
★★★★★
“The answers are keyed to all mark-scheme points and written so clearly that the logic clicks. I practised the revision questions daily and earned an A.”
★★★★★
“He writes the answers in a clear way, easy to study and understand. I used this A2 package one week before Unit 4 — it helped me score 112 UMS.”
★★★★★
“The diagrams and graphs are properly completed and explained. I saw exactly how much detail Edexcel expects in an A-level answer.”
★★★★★
“The answers do not skip the difficult reasoning between the question and the final mark-scheme wording. That is what improved my longer responses.”
★★★★★
“I used the pack for both AS and A2 — it saved me a lot of time searching and decoding mark schemes.”
★★★★★
“The online question finder saves so much time. I enter the session, year and question number and open the answer immediately.”
★★★★★
“The answers are keyed to all mark-scheme points and written so clearly that the logic clicks. I practised the revision questions daily and earned an A.”
★★★★★
“He writes the answers in a clear way, easy to study and understand. I used this A2 package one week before Unit 4 — it helped me score 112 UMS.”
★★★★★
“The diagrams and graphs are properly completed and explained. I saw exactly how much detail Edexcel expects in an A-level answer.”
★★★★★
“The answers do not skip the difficult reasoning between the question and the final mark-scheme wording. That is what improved my longer responses.”
★★★★★
“I used the pack for both AS and A2 — it saved me a lot of time searching and decoding mark schemes.”
★★★★★
“The online question finder saves so much time. I enter the session, year and question number and open the answer immediately.”
Meet Your Teacher
Solutions written around the mark scheme — not the textbook
I'm Hosni Showike, and I've spent over 20 years teaching, including 16 years at A-level, in IGCSE and A-level Biology and Chemistry. I hold master's degrees in biochemistry and biotechnology from the University of Brussels, and an international teaching certificate from the USA. I've authored eight science textbooks with more than 20,000 copies sold worldwide.
These solved past papers fix one specific problem: students who understand the topic but still drop marks — because no one showed them the exact wording examiners reward. Every answer is modelled on the mark scheme and examiner reports.
Proof, Not Promises
Real Students. Real Grades.
Verified grade distributions from recent June sessions. Pick a year — the chart draws itself.
66%
A/A* · June 2025
Scored A or A* 66%
Scored B 23%
Scored C 7%
D or below 4%
June 2025 · highest A/A* rate in five years.
The Method
How Every Answer Is Built
Each solution works backwards from the mark scheme and examiner reports — so your child learns the exact wording that earns each mark, then practises it until full marks become routine.
Read the command word
Every question is decoded first — describe, explain, calculate — so you answer what the examiner is actually asking.
Write the mark-scheme points
Model answers show the precise phrasing that scores, point by point — no padding, nothing missed.
Check the examiner insight
Short notes flag the traps that cost most students marks — the ones examiner reports call out year after year.
Practice App Included
Practise by topic or by year — on any device
Every book comes with the Chem-Bio practice app. Your child solves real exam questions, checks the full worked answer, and tracks what they've mastered.
Switch between Topical
and Classified
modes
Choose the topics or the exam years you want to drill
Enter any exam question number and jump straight to the worked answer
Regularly updated with the most recent exam sessions
What's Covered
Exactly What You'll Practise
Every question mapped to the Edexcel International A-Level Biology specification — all six units (WBI11–WBI16), across AS and A2, solved for the 2019–2026 sessions.
The AS foundation unit.
Biological molecules and water
The heart, circulation and cardiovascular health
Cell membranes and transport
Cell biology and ecology at AS.
Cell structure, division and stem cells
Gas exchange and the immune system
Biodiversity, classification and conservation
The AS practical-skills paper, solved in full.
Core practicals and method
Data handling and error
Evaluation and conclusions
A2 begins with energy and ecosystems.
Photosynthesis and respiration
Ecosystems, energy flow and succession
Microbiology and the immune response
The most demanding synoptic content.
Muscles, nerves and coordination
Homeostasis and the kidney
Gene technology and the statistics questions
The A2 practical-skills paper, solved in full.
Experimental design and variables
Statistical tests and analysis
Evaluation and improvement
See Before You Buy
Flip Through Real Pages
Turn the pages of the actual books — every paper is either fully solved or provided as classified topical questions.
Edexcel AS Biology — Unit 1: 2019–2025 Classified QuestionsEdexcel AS Biology — Unit 2: 2019–2025 Classified QuestionsEdexcel A2 Biology — Unit 4: 2019–2025 Classified Past PapersEdexcel A2 Biology — Unit 5: 2019–2025 Classified Past Papers
Get Access
Get the Solved Past Papers
Instant access after purchase — every solved paper in one place, with two full years to revise at your own pace.
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One-time payment · 2 years full access
All six units solved & classified — AS + A2 (2019–2026)
Statistics and practical-skills papers worked in full
Solve by topic or by year, enter any question number for the direct answer, and get every new session as it's added.
Bonus
02
Direct WhatsApp Access to Mr Hosni — included free
Ask about any question or answer and get a reply from the teacher directly — never a chatbot or a junior tutor.
Bonus
03
Video Explanations — included free
Watch the trickiest questions worked on screen, step by step, so the method sticks.
The 7-Day, No-Questions-Asked Guarantee
Not satisfied within 7 days of purchase? Contact us and we'll process a full refund — no questions asked. We're confident in these solutions, and we want you to feel completely safe making this decision.
FAQ
Questions? Answered.
A full library of worked exam papers plus topical past papers organised by unit — from Unit 1 molecules, transport and health through to the cell biology, energy, immunity and coordination content of the later units. Every question is answered in full and in clear language, so the demanding jump from AS to A2 is guided rather than guessed.
Yes. At this level a technically correct answer still fails if it misses the examiner's precise wording. Every model answer is written to satisfy those exact requirements while remaining genuinely readable, so you understand both what to write and why it scores.
We do, in full. Each statistical question is worked step by step: choosing the test, setting the hypotheses, computing the value and interpreting it against the critical value, so the whole procedure becomes clear and repeatable.
Yes. The practical-assessment units (WBI13 and WBI16) are covered too, with experiment design, variables and analysis questions worked as thoroughly as the theory.
The app lets you revise by Topical mode (choose topics) or Classified mode (choose exam years), and you can enter any question number to jump to the worked answer. You can buy any single unit, the AS set (Units 1–3), the A2 set (Units 4–6), or all six units together.
The current Edexcel International A-Level Biology specification, Units 1 to 6 (WBI11–WBI16), with every series from 2019 to the latest 2026 sessions. New papers are added automatically and access lasts two full years.
Your A* in Edexcel IAL Biology Starts Here
Every past paper from 2019 to 2026, solved and classified, with the practice app and model answers built around exactly what examiners reward.
