Edexcel A Level Biology B Past Papers, Mark Schemes and Examiners' Reports

Every Pearson Edexcel A Level Biology B (9BI0) and AS Biology B (8BI0) paper since the current specification began, with the mark scheme and examiners' report beside each one, plus the Pearson specimen papers. Use the switch to choose A level or AS. On a phone, tap a series to open it.

Studying Edexcel Biology A (Salters-Nuffield) instead? Edexcel SNAB past papers are here.

How to get the most from a paper

  1. Do it timed, in one sitting, with no notes: 1 hour 45 minutes for A level Papers 1 and 2, 2 hours 30 minutes for Paper 3, and 1 hour 30 minutes for each AS paper.
  2. Mark it yourself with the mark scheme. Be strict: if your wording isn't on the scheme, don't give yourself the mark.
  3. For every question you dropped marks on, read what the examiners' report says about it. That is where you find out what the examiners actually wanted.

A level Papers 1 and 2 are out of 90 marks and Paper 3 is out of 120 (300 in all). AS Papers 1 and 2 are out of 80 each.

Pearson published no examiners' reports for June 2017, or for AS in October 2020 and November 2021 (too few entries). June 2026 papers appear here once Pearson releases them.

Series
Paper 1Advanced Biochemistry, Microbiology and Genetics · 9BI0/01 · 90 marks
Paper 2Advanced Physiology, Evolution and Ecology · 9BI0/02 · 90 marks
Paper 3General and Practical Principles in Biology · 9BI0/03 · 120 marks
June 2025Grade boundaries
Paper 1QP0.9 MBMS0.5 MBER3.3 MB
Paper 2QP1.7 MBMS0.5 MBER5.6 MB
Paper 3QP1.1 MBMS0.4 MBER6.5 MB
June 2024Grade boundaries
Paper 1QP0.5 MBMS0.3 MBER4.3 MB
Paper 2QP2.0 MBMS0.3 MBER6.1 MB
Paper 3QP1.3 MBMS0.4 MBER7.6 MB
June 2023Grade boundaries
Paper 1QP0.5 MBMS0.4 MBER5.8 MB
Paper 2QP1.6 MBMS0.4 MBER15.9 MB
Paper 3QP0.7 MBMS0.5 MBER16.6 MB
June 2022Grade boundaries
Paper 1QP1.1 MBMS0.5 MBER4.3 MB
Paper 2QP1.6 MBMS0.4 MBER8.4 MB
Paper 3QP1.4 MBMS0.5 MBER11.0 MB
November 2021Grade boundaries
Paper 1QP0.8 MBMS0.4 MBER0.1 MB
Paper 2QP1.1 MBMS0.4 MBER0.2 MB
Paper 3QP2.8 MBMS0.3 MBER0.7 MB
October 2020Grade boundaries
Paper 1QP1.7 MBMS0.5 MBER1.1 MB
Paper 2QP1.2 MBMS0.4 MBER0.1 MB
Paper 3QP1.1 MBMS0.5 MBER1.2 MB
June 2019Grade boundaries
Paper 1QP0.3 MBMS0.3 MBER4.0 MB
Paper 2QP1.1 MBMS0.1 MBER4.1 MB
Paper 3QP1.3 MBMS0.2 MBER5.6 MB
June 2018Grade boundaries
Paper 1QP0.2 MBMS0.4 MBER3.4 MB
Paper 2QP0.4 MBMS0.3 MBER4.2 MB
Paper 3QP0.7 MBMS0.4 MBER4.1 MB
June 2017Grade boundaries
Paper 1QP0.2 MBMS0.3 MB
Paper 2QP1.0 MBMS0.1 MB
Paper 3QP0.2 MBMS0.1 MB
Specimen papers
Paper 1QP1.0 MBMS0.2 MB
Paper 2QP0.8 MBMS0.2 MB
Paper 3QP0.9 MBMS0.5 MB
Series
Paper 1Core Cellular Biology and Microbiology · 8BI0/01 · 80 marks
Paper 2Core Physiology and Ecology · 8BI0/02 · 80 marks
June 2025Grade boundaries
Paper 1QP0.9 MBMS0.3 MBER0.2 MB
Paper 2QP1.1 MBMS0.4 MBER0.2 MB
June 2024Grade boundaries
Paper 1QP0.9 MBMS0.4 MBER0.1 MB
Paper 2QP0.6 MBMS0.3 MBER0.1 MB
June 2023Grade boundaries
Paper 1QP0.7 MBMS0.3 MBER0.1 MB
Paper 2QP0.5 MBMS0.3 MBER0.2 MB
June 2022Grade boundaries
Paper 1QP1.3 MBMS0.4 MBER0.2 MB
Paper 2QP1.5 MBMS0.4 MBER0.2 MB
November 2021Grade boundaries
Paper 1QP1.0 MBMS0.3 MB
Paper 2QP0.8 MBMS0.4 MB
October 2020Grade boundaries
Paper 1QP0.9 MBMS0.3 MB
Paper 2QP1.7 MBMS0.3 MB
June 2019Grade boundaries
Paper 1QP0.3 MBMS0.2 MBER0.2 MB
Paper 2QP0.5 MBMS0.1 MBER0.1 MB
June 2018Grade boundaries
Paper 1QP0.3 MBMS0.3 MBER4.6 MB
Paper 2QP0.3 MBMS0.3 MBER2.8 MB
June 2017Grade boundaries
Paper 1QP0.3 MBMS0.3 MB
Paper 2QP0.2 MBMS0.1 MB
June 2016Grade boundaries
Paper 1QP1.3 MBMS0.1 MBER7.0 MB
Paper 2QP1.7 MBMS0.2 MBER3.5 MB
Specimen papers
Paper 1QP0.7 MBMS0.2 MB
Paper 2QP0.6 MBMS0.3 MB

QP = question paper, MS = mark scheme, ER = examiners' report. Each link opens the PDF in a new tab. Compare grade boundaries across every year.

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Question papers, mark schemes and examiners' reports © Pearson Education Ltd.