BIOLOGY · Pearson Edexcel IGCSE
BIOLOGY/12
B / 1BR (Core Biology)
Biology · 2024 · Variant 2
Relative difficulty
Analysis source: Pearson Edexcel
Analysis aligned to the official syllabus and assessment design.
3.2 / 5
180
195 min
Food production
Cohort performance
Session statistics from official examination reports
Total marks
180
Duration
195 min
Session difficulty
3.2 / 5
Key examiner messages
Top priorities from the principal examiner before you revise
The Summer 2024 assessment represents a balanced and fair test of the Pearson Edexcel International GCSE (9-1) Biology specification, leaning towards a moderate difficulty level.
While Paper 1BR eased candidates in with classic cell structures and enzyme principles, it steadily scaled to demanding quantitative questions, including complex multi-step calculations.
Paper 2BR expanded on this by testing deeper application of theory in less common settings, such as water homeostasis in the desert-dwelling degu and the mechanics of large-scale offshore fish farming.
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.
Recall and Knowledge
Weight: 5100%Comprehension
Weight: 480%Application of
Weight: 360%Mathematical and
Weight: 240%Experimental
Weight: 120%
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
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.
Present multiple perspectives with evidence; balance breadth and depth.
Apply knowledge to an unfamiliar context; concise, practical points score best.
Match the expected response style for “State” questions.
Time traps
Sections where candidates spent disproportionate time relative to marks
Min per mark: 1.1
Syllabus traceability
Topics linked to questions and mark weighting in this session
Food production
26 marks this session
Co-ordination and response
24 marks this session
Gas exchange
23 marks this session
Inheritance
20 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
Reproduction
Nutrition (Structure and functions in living organisms)
The organism in the environment
Reproduction (Reproduction and inheritance)
Transport
Transport (Structure and functions in living organisms)
Inheritance
Biological molecules
Paper comparison
Marks and duration breakdown across papers in this session
Paper 1BR:
Paper 2BR:
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
Food production
26 marks this session
Practise in RevuiCo-ordination and response
24 marks this session
Practise in RevuiGas exchange
23 marks this session
Practise in RevuiInheritance
20 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 2024 assessment represents a balanced and fair test of the Pearson Edexcel International GCSE (9-1) Biology specification, leaning towards a moderate difficulty level.
- 2Message
While Paper 1BR eased candidates in with classic cell structures and enzyme principles, it steadily scaled to demanding quantitative questions, including complex multi-step calculations.
- 3Message
Paper 2BR expanded on this by testing deeper application of theory in less common settings, such as water homeostasis in the desert-dwelling degu and the mechanics of large-scale offshore fish farming.
Teacher briefing pack
One-page session summary for tutors and classroom review
2024 2024
Biology
The Summer 2024 assessment represents a balanced and fair test of the Pearson Edexcel International GCSE (9-1) Biology specification, leaning towards a moderate difficulty level. While Paper 1BR eased candidates in with classic cell structures and enzyme principles, it steadily s
The Summer 2024 assessment represents a balanced and fair test of the Pearson Edexcel International GCSE (9-1) Biology specification, leaning towards a moderate difficulty level.
While Paper 1BR eased candidates in with classic cell structures and enzyme principles, it steadily scaled to demanding quantitative questions, including complex multi-step calculations.
Paper 2BR expanded on this by testing deeper application of theory in less common settings, such as water homeostasis in the desert-dwelling degu and the mechanics of large-scale offshore fish farming.
- Total marks
- 180
- Duration
- 195 min
- Session difficulty
- 3.2 / 5
Session analysis
The Summer 2024 assessment represents a balanced and fair test of the Pearson Edexcel International GCSE (9-1) Biology specification, leaning towards a moderate difficulty level. While Paper 1BR eased candidates in with classic cell structures and enzyme principles, it steadily scaled to demanding quantitative questions, including complex multi-step calculations. Paper 2BR expanded on this by testing deeper application of theory in less common settings, such as water homeostasis in the desert-dwelling degu and the mechanics of large-scale offshore fish farming.
Updated Jun 13, 2026
Paper breakdown
Paper 1BR:
Paper 2BR:
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.
79% 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 & Calculation
111·48·62%
Extended Open Response
56·8·31%
Multiple Choice
13·13·7%
Study ROI
Bigger bubbles recur more often; higher bubbles carry more marks, helping you rank revision priorities.
Difficulty trend
Compare difficulty across recent years.
Time vs marks
Compare marks with suggested time allocation to plan exam pacing.
Paper 2BR
0.93 m/minTotal marks
70
Total time
75 min
Avg pace
0.93
Next-year prediction
Topics worth watching next year, with the reason shown directly below each bar.
Cloning & Micropropagation
85%85%
Cycles within Ecosystems
80%80%
Selective Breeding
78%78%
Genetic Modification (GMOs)
75%75%
Overall Difficulty Verdict
The Summer 2024 assessment represents a balanced and fair test of the Pearson Edexcel International GCSE (9-1) Biology specification, leaning towards a moderate difficulty level. While Paper 1BR eased candidates in with classic cell structures and enzyme principles, it steadily scaled to demanding quantitative questions, including complex multi-step calculations. Paper 2BR expanded on this by testing deeper application of theory in less common settings, such as water homeostasis in the desert-dwelling degu and the mechanics of large-scale offshore fish farming.
Exam tips
Paper format
- Duration
- 2h
- Total marks
- 110
- Weighting
- 61.1%
- Question types
- Multiple Choice, Structured and Short Answer, Practical / Experimental Design, Mathematical / Calculation
Analysis is paraphrased for study purposes. Always verify against the official examiner report and mark scheme.