HUMAN-BIOLOGY · Pearson Edexcel IGCSE
HUMAN-BIOLOGY/22
R (Regional)
Human Biology · June 2025 · Variant 2
Relative difficulty
Analysis source: Pearson Edexcel
Analysis aligned to the official syllabus and assessment design.
3.4 / 5
180
210 min
Coordination
Cohort performance
Session statistics from official examination reports
Total marks
180
Duration
210 min
Session difficulty
3.4 / 5
Key examiner messages
Top priorities from the principal examiner before you revise
An analysis of the Summer 2025 Pearson Edexcel International GCSE Human Biology Unit 4HB1 (Papers 01R and 02R) exam papers.
This series featured a strong emphasis on coordination, homeostasis, and reproduction, while respiration was noticeably absent.
Candidates faced challenging multi-step calculations, graphical analyses, and detailed biological drawings.
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.
Factual
Weight: 5100%Recall (A
Weight: 480%Application &
Weight: 360%Practical
Weight: 240%Skills
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.
Apply knowledge to an unfamiliar context; concise, practical points score best.
Match the expected response style for “State” questions.
Match the expected response style for “Draw” questions.
Match the expected response style for “Name” questions.
Support your choice with specific evidence from data or the scenario given.
Time traps
Sections where candidates spent disproportionate time relative to marks
Min per mark: 1.2
Min per mark: 1.2
Syllabus traceability
Topics linked to questions and mark weighting in this session
Coordination
25 marks this session
Homeostatic mechanisms
23 marks this session
Reproduction and heredity
22 marks this session
Cells and tissues
17 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
Homeostatic mechanisms
Disease (Human Biology)
Internal transport
Nutrition and energy
Coordination (Human Biology)
Reproduction and heredity (Human Biology)
Coordination
Gas exchange (Human Biology)
Paper comparison
Marks and duration breakdown across papers in this session
Paper 1R (UNIT: 4HB1, PAPER: 01R):
Paper 2R (UNIT: 4HB1, PAPER: 02R):
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
Coordination
25 marks this session
Practise in RevuiHomeostatic mechanisms
23 marks this session
Practise in RevuiReproduction and heredity
22 marks this session
Practise in RevuiCells and tissues
17 marks this session
Practise in RevuiSelf-diagnostic checklist
Key actions before you sit this paper — copy and tick off as you revise
- 1Message
An analysis of the Summer 2025 Pearson Edexcel International GCSE Human Biology Unit 4HB1 (Papers 01R and 02R) exam papers.
- 2Message
This series featured a strong emphasis on coordination, homeostasis, and reproduction, while respiration was noticeably absent.
- 3Message
Candidates faced challenging multi-step calculations, graphical analyses, and detailed biological drawings.
Teacher briefing pack
One-page session summary for tutors and classroom review
June 2025 2025
Human Biology
An analysis of the Summer 2025 Pearson Edexcel International GCSE Human Biology Unit 4HB1 (Papers 01R and 02R) exam papers. This series featured a strong emphasis on coordination, homeostasis, and reproduction, while respiration was noticeably absent. Candidates faced challenging
An analysis of the Summer 2025 Pearson Edexcel International GCSE Human Biology Unit 4HB1 (Papers 01R and 02R) exam papers.
This series featured a strong emphasis on coordination, homeostasis, and reproduction, while respiration was noticeably absent.
Candidates faced challenging multi-step calculations, graphical analyses, and detailed biological drawings.
- Total marks
- 180
- Duration
- 210 min
- Session difficulty
- 3.4 / 5
Session analysis
An analysis of the Summer 2025 Pearson Edexcel International GCSE Human Biology Unit 4HB1 (Papers 01R and 02R) exam papers. This series featured a strong emphasis on coordination, homeostasis, and reproduction, while respiration was noticeably absent. Candidates faced challenging multi-step calculations, graphical analyses, and detailed biological drawings.
Updated Jun 13, 2026
Paper breakdown
Paper 1R (UNIT: 4HB1, PAPER: 01R):
Paper 2R (UNIT: 4HB1, PAPER: 02R):
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.
81% 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.
Structured / Short Answer
98·38·54%
Extended Answer / Explanation
67·14·37%
Calculation
14·5·8%
Multiple Choice
1·1·1%
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 1R
0.86 m/minPaper 2R
0.86 m/minTotal marks
180
Total time
210 min
Avg pace
0.86
Next-year prediction
Topics worth watching next year, with the reason shown directly below each bar.
Respiration
95%95%
Internal Transport (Double circulation and blood vessels)
85%85%
Gas exchange (Alveoli adaptations)
80%80%
Exam tips
Paper format
- Duration
- 1h 45min
- Total marks
- 90
- Weighting
- 50%
- Question types
- Multiple Choice, Sentence Completion / Gap Fill, Calculation, Diagram Drawing / Labeling, Short Answer / Identification, Extended Answer / Explanation
Analysis is paraphrased for study purposes. Always verify against the official examiner report and mark scheme.