Cambridge IGCSE · Analysis & Prediction
2025 Cambridge IGCSE Biology (0610) Past Paper: Analysis & Answers
A comprehensive analysis of the October/November 2025 Cambridge IGCSE Biology (0610) examination series, covering Papers 13, 23, 33, 43, 53, and 63. Key areas tested include enzymes, transport in plants, human gas exchange, and reproduction, alongside practical skill evaluations in enzyme concentrations and respiration rates.
Updated: Jun 13, 2026
Paper breakdown
Examiner insights
Official reportCommon pitfalls
- Confusing the direction of water potential gradient when describing osmosis or transpirational water movement from soil to root hair cells.
- Stating that antibiotics kill viruses, which is a frequent error in both Core and Extended papers.
- Failing to round calculation results to the specified number of significant figures or decimal places (e.g., three significant figures for chicken mass change, or one decimal place for magnification).
- Drawing cell structures with single lines instead of double lines, or using shading in biological drawings (Paper 5/6 Q3).
Misconceptions
- Believing that cell walls are found only in plant cells, thereby misclassifying fungi or bacteria.
- Thinking that anaerobic respiration in yeast produces lactic acid rather than ethanol/alcohol and carbon dioxide.
- Assuming that veins have narrow lumens and thick muscular walls, confusing them with arteries.
Where marks are lost
- Incorrectly identifying the left and right sides of the heart in diagrams, leading to wrong valve and chamber designations.
- Lacking precise terminology in genetics, such as failing to define a gene as a 'length of DNA that codes for a protein'.
- Missing unit symbols (e.g., 'mm per minute' or '%') in final calculation answers when not pre-printed.
Estimated grade boundary
Updated: Jun 13, 2026
| Grade | Mark | Percentage |
|---|---|---|
| A* | 164/200 | 82% |
| A | 140/200 | 70% |
| B | 116/200 | 58% |
| C | 92/200 | 46% |
| D | 79/200 | 40% |
| E | 66/200 | 33% |
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