HUMAN-BIOLOGY · Pearson Edexcel IGCSE
HUMAN-BIOLOGY/21
R (Regional)
Human Biology · 2024 · Variant 1
Relative difficulty
Analysis source: Pearson Edexcel
Analysis aligned to the official syllabus and assessment design.
3.5 / 5
180
210 min
Disease (Human Biology)
Cohort performance
Session statistics from official examination reports
Total marks
180
Duration
210 min
Session difficulty
3.5 / 5
Key examiner messages
Top priorities from the principal examiner before you revise
The 2024 Pearson Edexcel International GCSE Human Biology examination presented a balanced yet conceptually deep set of questions across both papers.
Paper 1 focused heavily on testing physiological systems, cellular movement, and core biochemistry, while Paper 2 tested higher-level clinical and practical applications, including complex data handling and advanced experimental design.
The overall difficulty index is evaluated at a 3.5 out of 5, representing a moderate-to-challenging assessment.
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.
Knowledge and Understanding
Weight: 4100%Experimental and
Weight: 375%Quantitative
Weight: 250%Physiological
Weight: 125%
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.
Match the expected response style for “State” questions.
Match the expected response style for “Name” questions.
Show formula, substitution, and unit; method marks need visible working.
Time traps
Sections where candidates spent disproportionate time relative to marks
Min per mark: 2
Min per mark: 1.3
Min per mark: 1.2
Min per mark: 1.1
Syllabus traceability
Topics linked to questions and mark weighting in this session
Disease (Human Biology)
41 marks this session
Coordination (Human Biology)
26 marks this session
Reproduction and heredity (Human Biology)
26 marks this session
Gas exchange (Human Biology)
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 1 (4HB1/01):
Paper 2 (4HB1/02):
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
Disease (Human Biology)
41 marks this session
Practise in RevuiCoordination (Human Biology)
26 marks this session
Practise in RevuiReproduction and heredity (Human Biology)
26 marks this session
Practise in RevuiGas exchange (Human Biology)
24 marks this session
Practise in RevuiSelf-diagnostic checklist
Key actions before you sit this paper — copy and tick off as you revise
- 1Message
The 2024 Pearson Edexcel International GCSE Human Biology examination presented a balanced yet conceptually deep set of questions across both papers.
- 2Message
Paper 1 focused heavily on testing physiological systems, cellular movement, and core biochemistry, while Paper 2 tested higher-level clinical and practical applications, including complex data handling and advanced experimental design.
- 3Message
The overall difficulty index is evaluated at a 3.5 out of 5, representing a moderate-to-challenging assessment.
Teacher briefing pack
One-page session summary for tutors and classroom review
2024 2024
Human Biology
The 2024 Pearson Edexcel International GCSE Human Biology examination presented a balanced yet conceptually deep set of questions across both papers. Paper 1 focused heavily on testing physiological systems, cellular movement, and core biochemistry, while Paper 2 tested higher-le
The 2024 Pearson Edexcel International GCSE Human Biology examination presented a balanced yet conceptually deep set of questions across both papers.
Paper 1 focused heavily on testing physiological systems, cellular movement, and core biochemistry, while Paper 2 tested higher-level clinical and practical applications, including complex data handling and advanced experimental design.
The overall difficulty index is evaluated at a 3.5 out of 5, representing a moderate-to-challenging assessment.
- Total marks
- 180
- Duration
- 210 min
- Session difficulty
- 3.5 / 5
Session analysis
The 2024 Pearson Edexcel International GCSE Human Biology examination presented a balanced yet conceptually deep set of questions across both papers. Paper 1 focused heavily on testing physiological systems, cellular movement, and core biochemistry, while Paper 2 tested higher-level clinical and practical applications, including complex data handling and advanced experimental design. The overall difficulty index is evaluated at a 3.5 out of 5, representing a moderate-to-challenging assessment.
Updated Jun 13, 2026
Paper breakdown
Paper 1 (4HB1/01):
Paper 2 (4HB1/02):
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.
75% 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 and Practical Explanations
80·20·44%
Short Answer Questions
72·45·40%
Calculations and Data Analysis
15·5·8%
Drawing and Diagramming
8·2·4%
Multiple Choice Questions
(MCQ)
5·5·3%
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
0.87 m/minPaper 2 - Questions
0.89 m/minPaper 2 - Questions
0.80 m/minTotal marks
91
Total time
115 min
Avg pace
0.79
Next-year prediction
Topics worth watching next year, with the reason shown directly below each bar.
Bones, muscles and joints (Human Biology)
95%95%
Cells and tissues (Human Biology)
90%90%
Respiration (Human Biology)
85%85%
Overall Cohort Difficulty Verdict
The 2024 Pearson Edexcel International GCSE Human Biology examination presented a balanced yet conceptually deep set of questions across both papers. Paper 1 focused heavily on testing physiological systems, cellular movement, and core biochemistry, while Paper 2 tested higher-level clinical and practical applications, including complex data handling and advanced experimental design. The overall difficulty index is evaluated at a 3.5 out of 5, representing a moderate-to-challenging assessment.
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.