IGCSE Biology 0610 is one of the most heavily entered Cambridge subjects among Kenyan candidates, and it produces a distinctive kind of disappointment: the learner who knew the content and still scored a grade below expectation. The gap is almost always technique, and technique in 0610 means one thing above all: answering the command word, not the topic.
The command words that decide marks
| Command word | What it requires | The classic error |
|---|---|---|
| State / Give / Name | A fact, one phrase, no reasoning. | Writing three sentences where one word scores. |
| Describe | What happens, what the data shows, in order. | Explaining why instead of saying what. |
| Explain | Why it happens: mechanism, cause, purpose. | Restating the observation without a because. |
| Compare | Both things named in every point, with a comparative. | Describing only one of them. |
| Suggest | Apply known biology to an unfamiliar case. | Panicking because "we never learned this". That is the point of the question. |
| Calculate | Working shown, units given. | A bare number, no units, no working to rescue partial credit. |
The describe-versus-explain pair does the most damage. "Describe the effect of temperature on enzyme activity" wants the shape of the curve: activity rises to an optimum, then falls sharply. "Explain" wants kinetic energy, collision frequency, and denaturation above the optimum. Candidates routinely give the explanation when asked to describe, and score nothing for a correct paragraph, because it does not answer the question asked.
Data and graph questions
Every 0610 paper carries data handling, and the marks follow a pattern: quote figures from the graph, with units, at the turning points; state the overall trend before the exceptions; and when asked to compare two curves, use numbers from both. A candidate who writes "the rate increases" where the graph shows it increasing from 2 to 14 arbitrary units between 10°C and 40°C has left the quoting mark on the table.
Paper 6, the alternative to practical
Kenyan private candidates usually sit Paper 6 rather than the practical. It is answerable entirely from preparation, because the same families of question recur: drawing and labelling with a sharp pencil and single lines, magnification calculations, the food tests with reagent and colour change, variables in an experimental plan, and sources of error. The magnification formula and the food test table are close to guaranteed marks for a candidate who has them cold.
| Test | Reagent | Positive result |
|---|---|---|
| Starch | Iodine solution | Brown to blue-black |
| Reducing sugar | Benedict's, heated | Blue to orange or brick red |
| Protein | Biuret | Blue to purple |
| Fat | Ethanol then water | White emulsion |
This piece continues our series on the November series: Mathematics 0580, English 0500, Geography 0460 and Economics 0455 are already live. For structured preparation across subjects, the IGCSE Countdown Bundle for the November 2026 series carries revision material for the seven most-entered subjects, and candidates who want live teaching can join the IGCSE live training programme.
Key Takeaways
- The command word decides the mark. Describe is what; explain is why.
- Quote figures with units from graphs; the quoting itself carries marks.
- Suggest questions deliberately present unfamiliar contexts; apply known biology calmly.
- Paper 6 recurs: magnification, food tests, variables, error. Prepare those directly.
- Always show working in calculations; partial credit needs something to attach to.
Frequently Asked Questions
Core or Extended for a Kenyan candidate?
Extended is required for grades above C. A candidate consistently scoring above roughly 60 per cent on Extended past papers belongs in Extended; the Core ceiling is a C.
How many past papers are enough?
Quality beats count. Five papers marked strictly against the scheme, with every dropped mark classified as content or technique, outperform fifteen papers done loosely.
Is IGCSE Biology the same as CBC Integrated Science?
No. They are separate curricula with different assessment styles, and they should be revised separately. This site keeps CBC and Cambridge material strictly apart for that reason.
When is the November 2026 series?
The October/November series runs across those two months, with the exact timetable per subject published by Cambridge. Check your centre's copy rather than relying on a general date.
IGCSE Revision Materials
Notes and topical questions for the core IGCSE subjects, timed to the Oct/Nov series.
⏳ Only 62 days to the national assessments on 26 October. Start now.
from KSH 350 · Get it now → 📱 M-Pesa, instant download · join parents preparing nowHave a CBC question this article didn't answer?
Ask Somo, Kenya's first AI tutor. CBC-grounded, Kenyan examples, instant feedback. Five free questions a day with no signup, or start a 7-day free trial for 30 questions a day.
Try Somo Free →