HUMAN-BIOLOGY · Pearson Edexcel IGCSE
HUMAN-BIOLOGY/12
R (Regional)
Human Biology · 2024 · Variant 2
Relative difficulty
Analysis source: Pearson Edexcel
Analysis aligned to the official syllabus and assessment design.
3.8 / 5
180
210 min
Circulatory and Cardiac Function / Inheritance Patterns
Cohort performance
Session statistics from official examination reports
Total marks
180
Duration
210 min
Session difficulty
3.8 / 5
Key examiner messages
Top priorities from the principal examiner before you revise
With a difficulty index of 3.8 out of 5, this combined examination series was robust and technically demanding.
While direct recall questions on basic anatomy (e.g., bone joints, teeth types, and blood components) provided accessible entry points, the papers quickly escalated in complexity.
Students faced multi-step mathematical calculations involving standard form and unit conversions, alongside highly detailed long-form explanation questions.
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%Knowledge
Weight: 480%Application and Analysis
Weight: 360%Experimental
Weight: 240%Mathematical
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
State features in sequence or list observable properties — do not explain causes unless asked.
Give reasons and link mechanism to outcome; each point needs a because/so chain.
Show formula, substitution, and unit; method marks need visible working.
Match the expected response style for “State” questions.
Match the expected response style for “Give” questions.
Match the expected response style for “Name” questions.
Match the expected response style for “Draw” questions.
Time traps
Sections where candidates spent disproportionate time relative to marks
Min per mark: 2
Min per mark: 1.2
Min per mark: 1.2
Min per mark: 1.2
Min per mark: 1.2
Min per mark: 1.2
Syllabus traceability
Topics linked to questions and mark weighting in this session
Internal transport
38 marks this session
Reproduction and heredity
35 marks this session
Nutrition and energy
24 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 01R:
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
Internal transport
38 marks this session
Practise in RevuiReproduction and heredity
35 marks this session
Practise in RevuiNutrition and energy
24 marks this session
Practise in RevuiSelf-diagnostic checklist
Key actions before you sit this paper — copy and tick off as you revise
- 1Message
With a difficulty index of 3.8 out of 5, this combined examination series was robust and technically demanding.
- 2Message
While direct recall questions on basic anatomy (e.g., bone joints, teeth types, and blood components) provided accessible entry points, the papers quickly escalated in complexity.
- 3Message
Students faced multi-step mathematical calculations involving standard form and unit conversions, alongside highly detailed long-form explanation questions.
Teacher briefing pack
One-page session summary for tutors and classroom review
2024 2024
Human Biology
With a difficulty index of 3.8 out of 5, this combined examination series was robust and technically demanding. While direct recall questions on basic anatomy (e.g., bone joints, teeth types, and blood components) provided accessible entry points, the papers quickly escalated in
With a difficulty index of 3.8 out of 5, this combined examination series was robust and technically demanding.
While direct recall questions on basic anatomy (e.g., bone joints, teeth types, and blood components) provided accessible entry points, the papers quickly escalated in complexity.
Students faced multi-step mathematical calculations involving standard form and unit conversions, alongside highly detailed long-form explanation questions.
- Total marks
- 180
- Duration
- 210 min
- Session difficulty
- 3.8 / 5
Session analysis
With a difficulty index of 3.8 out of 5, this combined examination series was robust and technically demanding. While direct recall questions on basic anatomy (e.g., bone joints, teeth types, and blood components) provided accessible entry points, the papers quickly escalated in complexity. Students faced multi-step mathematical calculations involving standard form and unit conversions, alongside highly detailed long-form explanation questions.
Updated Jun 13, 2026
Paper breakdown
Paper 01R:
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.
78% 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
(1-3 Marks)
112·52·62%
Structured / Extended Response
(4-5 Marks)
65·15·36%
Multiple Choice
3·3·2%
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 1 - Questions
0.50 m/minPaper 1 - Questions
0.85 m/minPaper 1 - Questions
0.86 m/minPaper 2 - Questions
0.87 m/minPaper 2 - Questions
0.86 m/minPaper 2 - Questions
0.85 m/minTotal marks
153
Total time
187 min
Avg pace
0.82
Next-year prediction
Topics worth watching next year, with the reason shown directly below each bar.
Gas exchange
5%5%
Disease transmission & Immune systems
4%4%
Movement of substances in and out of cells
4%4%
Difficulty Verdict
With a difficulty index of 3.8 out of 5, this combined examination series was robust and technically demanding. While direct recall questions on basic anatomy (e.g., bone joints, teeth types, and blood components) provided accessible entry points, the papers quickly escalated in complexity. Students faced multi-step mathematical calculations involving standard form and unit conversions, alongside highly detailed long-form explanation questions.
Examiner notes & key calculations
- Unit Conversion Blunders: In Paper 1R, Question 7(c), students had to convert nanometres (nm) to milliseconds (ms) and express the final speed in standard form. Many failed to perform the double conversion accurately.
- Graphing Inaccuracies: Plotting starch digestion over different pH levels required a smooth curve of best fit. Many candidates lost a mark by drawing straight lines connecting dot-to-dot.
- Misunderstanding Cell Status: In Paper 2R, Question 5(c), many candidates incorrectly identified platelets or hormones as actual cells.
Exam tips
Paper format
- Duration
- 1h 45min
- Total marks
- 90
- Weighting
- 50%
- Question types
- 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.