BIOLOGY-B-9BI0 · Pearson Edexcel A Level
BIOLOGY-B-9BI0/11
Paper 1
Biology B · 2022 · Variant 1
Relative difficulty
Analysis source: Pearson Edexcel
Analysis aligned to the official syllabus and assessment design.
4.0 / 5
300
360 min
Gas Exchange and Environmental Adaptation
Cohort performance
Session statistics from official examination reports
Total marks
300
Duration
360 min
Session difficulty
4.0 / 5
Key examiner messages
Top priorities from the principal examiner before you revise
The Summer 2022 Pearson Edexcel GCE Biology B (9BI0) series represents a high-tier assessment, earning a solid 4 out of 5 stars.
It blends rigorous biochemical pathways with demanding practical and mathematical application.
The inclusion of unfamiliar research contexts, such as the Fritillaria delavayi medicinal selection pressure, hypoxia-inducible factors, and the ecology of dung beetles, forced students to apply core concepts in novel scenarios.
Question difficulty map
How candidates performed on each question in this series
No data available in official reports
Assessment objectives
Skill and AO weighting from official examiner commentary
Skill weighting
Shows the skill mix this paper tested most heavily.
Mathematical & Calculation
Weight: 5100%Experimental
Weight: 480%Analysis & I
Weight: 360%Biological Conceptual
Weight: 240%
Method marks watchlist
Where working, steps, or method marks were commonly lost
No data available in official reports
Recurring mistakes across years
Themes examiners flag in multiple recent sessions for this subject
No data available in official reports
Question choice intelligence
Mean scores and popularity for optional questions (HKDSE electives)
No data available in official reports
Level exemplars
What candidate scripts at each grade level looked like
No data available in official reports
Grade & admission context
How marks relate to grade thresholds and entry standards
Report type
Examiner report — national grade boundaries and question-level commentary
Level A*
Approx. 61% of maximum mark
Level A
Approx. 49% of maximum mark
Level B
Approx. 40% of maximum mark
Level C
Approx. 32% of maximum mark
Level D
Approx. 23% of maximum mark
Level E
Approx. 14% of maximum mark
Deep insights
What top candidates did
Techniques and approaches examiners rewarded in this series
No data available in official reports
Command word playbook
How to match each command word to the expected response style
Give reasons and link mechanism to outcome; each point needs a because/so chain.
State features in sequence or list observable properties — do not explain causes unless asked.
Show formula, substitution, and unit; method marks need visible working.
Match the expected response style for “State” questions.
Break into parts and explain how each contributes to the whole question focus.
Match the expected response style for “Comment” questions.
Match the expected response style for “Determine” questions.
Match the expected response style for “Devise” questions.
Time traps
Sections where candidates spent disproportionate time relative to marks
Min per mark: 0.2
Min per mark: 0
Syllabus traceability
Topics linked to questions and mark weighting in this session
Photosynthesis
19 marks this session
Biodiversity
17 marks this session
Gas exchange
16 marks this session
Microbial techniques
15 marks this session
MCQ trap analytics
Commonly chosen wrong options from examiner commentary
No data available in official reports
Topic heatmap across years
Mark concentration by topic and exam year for this subject
Mark intensity
Biodiversity
Aerobic respiration
Cell transport mechanisms
Response to infection
Circulation
Photosynthesis
Gas exchange
Microbial techniques
Difficulty trend
How session difficulty has shifted across recent years
Paper comparison
Marks and duration breakdown across papers in this session
Paper 1: Advanced Biochemistry, Microbiology and Genetics:
Paper 2: Advanced Physiology, Evolution and Ecology:
Paper 3: General and Practical Principles in Biology:
Marks you can still earn
Where valid approaches outside the mark scheme may still gain credit
No data available in official reports
Practise what examiners flagged
Target weak topics from this report inside the Revui app
Photosynthesis
19 marks this session
Practise in RevuiBiodiversity
17 marks this session
Practise in RevuiGas exchange
16 marks this session
Practise in RevuiMicrobial techniques
15 marks this session
Practise in RevuiSelf-diagnostic checklist
Key actions before you sit this paper — copy and tick off as you revise
- 1Message
The Summer 2022 Pearson Edexcel GCE Biology B (9BI0) series represents a high-tier assessment, earning a solid 4 out of 5 stars.
- 2Message
It blends rigorous biochemical pathways with demanding practical and mathematical application.
- 3Message
The inclusion of unfamiliar research contexts, such as the Fritillaria delavayi medicinal selection pressure, hypoxia-inducible factors, and the ecology of dung beetles, forced students to apply core concepts in novel scenarios.
Teacher briefing pack
One-page session summary for tutors and classroom review
2022 2022
Biology B
The Summer 2022 Pearson Edexcel GCE Biology B (9BI0) series represents a high-tier assessment, earning a solid 4 out of 5 stars. It blends rigorous biochemical pathways with demanding practical and mathematical application. The inclusion of unfamiliar research contexts, such as t
The Summer 2022 Pearson Edexcel GCE Biology B (9BI0) series represents a high-tier assessment, earning a solid 4 out of 5 stars.
It blends rigorous biochemical pathways with demanding practical and mathematical application.
The inclusion of unfamiliar research contexts, such as the Fritillaria delavayi medicinal selection pressure, hypoxia-inducible factors, and the ecology of dung beetles, forced students to apply core concepts in novel scenarios.
- Total marks
- 300
- Duration
- 360 min
- Session difficulty
- 4.0 / 5
Session analysis
The Summer 2022 Pearson Edexcel GCE Biology B (9BI0) series represents a high-tier assessment, earning a solid 4 out of 5 stars. It blends rigorous biochemical pathways with demanding practical and mathematical application. The inclusion of unfamiliar research contexts, such as the Fritillaria delavayi medicinal selection pressure, hypoxia-inducible factors, and the ecology of dung beetles, forced students to apply core concepts in novel scenarios.
Updated Jun 14, 2026
Paper breakdown
Paper 1: Advanced Biochemistry, Microbiology and Genetics:
Paper 2: Advanced Physiology, Evolution and Ecology:
Paper 3: General and Practical Principles in Biology:
Top chapters
Exam structure insights
Marks by chapter
See where the marks were concentrated so revision time goes to the highest-value topics.
Mark accessibility
Estimate which marks were basic, mid-level, or high-difficulty.
70% within easy or medium reach
Command word frequency
Spot common command words so answers match the expected response style.
Question type mix
Compare the mark share of each paper section and question type.
Short Answer / Structured
192·55·64%
Calculation / Math
61·12·20%
Extended Response / Essay
33·5·11%
Multiple Choice
(MCQ)
14·14·5%
Study ROI
Bigger bubbles recur more often; higher bubbles carry more marks, helping you rank revision priorities.
Time vs marks
Compare marks with suggested time allocation to plan exam pacing.
Paper 1: Advanced B…
180.20 m/minPaper 2: Advanced P…1
4.02 m/minTotal marks
1102
Total time
55 min
Avg pace
20.04
Next-year prediction
Topics worth watching next year, with the reason shown directly below each bar.
Action of antibiotics
90%90%
Origins of genetic variation
85%85%
Control of heart rate in mammals
75%75%
Difficulty Verdict
The Summer 2022 Pearson Edexcel GCE Biology B (9BI0) series represents a high-tier assessment, earning a solid 4 out of 5 stars. It blends rigorous biochemical pathways with demanding practical and mathematical application. The inclusion of unfamiliar research contexts, such as the Fritillaria delavayi medicinal selection pressure, hypoxia-inducible factors, and the ecology of dung beetles, forced students to apply core concepts in novel scenarios.
Examiner notes & key calculations
- Standard Deviation Misinterpretation: Many candidates struggled to discuss the validity of conclusions using error bars. A common pitfall was stating that standard deviations overlapped when they clearly did not, or failing to link non-overlapping bars to statistical significance.
- Secretory Pathway Confusion: In cell biology, a surprising number of students confused the functions of the smooth endoplasmic reticulum (SER) and rough endoplasmic reticulum (RER) during radioactive amino acid sequencing tasks.
- Vague Data Descriptions: In extended 6-mark and 9-mark analysis questions, students often merely copied figures from the graphs without linking them back to physiological processes like aerobic respiration, cell division, or natural selection.
Analysis is paraphrased for study purposes. Always verify against the official examiner report and mark scheme.