IGCSE Biology Scientific English

IGCSE Biology Scientific English: Write Clearer Exam Answers

Biology editorial review is supported by the named review panel. Reviewer participation may vary by guide. Checked against Cambridge IGCSE Biology 0610 (2026–2028); last reviewed August 2026.

Key point

Improve IGCSE Biology scientific English by separating concept knowledge from language, learning terms in connected groups and using simple structures for describe, explain, compare and suggest questions.

A student does not need elaborate English to answer IGCSE Biology well. The goal is clear scientific meaning: the correct term, the correct relationship and a sentence that answers the command word. This can be practised without memorising long paragraphs.

Distinguish language difficulty from Biology difficulty

Ask the student to explain the idea in the language they understand best, then identify the essential English terms needed in the exam. If the concept is inaccurate in both languages, teach the Biology first. If the concept is sound but the English answer is vague, focus on terminology and sentence structure.

Parents do not need to correct every grammar mistake. Prioritise errors that change the scientific meaning, such as confusing “increase” with “decrease”, “diffusion” with “osmosis”, or “gene” with “allele”.

Build vocabulary as connected concepts

For each term, record four things: a short meaning, the term it is often confused with, one example and one sentence using it. For osmosis, for example, connect water, partially permeable membrane, water potential and net movement rather than memorising an isolated line.

Use the Biology glossary and the definitions guide, then test the terms inside questions.

Use simple structures for common command words

Describe: state the visible pattern or change, using data where useful.
Explain: state the change, the biological reason and the consequence.
Compare: name both items in each sentence and use a clear point of difference or similarity.
Suggest: use the information given and a reasonable biological principle, without pretending the answer is certain.

Short accurate sentences are usually safer than long sentences containing several unclear pronouns.

Read unfamiliar contexts in two passes

First identify the biological topic and the command word. Then return to the passage, graph or table to collect only the information needed for that task. Students who translate every word before deciding what the question asks can lose time and miss the main relationship.

Circle units, variables, named structures and comparison groups. These anchors make the question easier to process even when some surrounding vocabulary is unfamiliar.

Practise precision without losing confidence

Correct one language pattern at a time. A page covered in grammar corrections can hide the Biology improvement and discourage the student. Keep a small list of recurring scientific phrases, such as “increases the rate because” or “has a larger surface area for”.

The command-word guide and practice question sets provide controlled places to apply these structures.

Frequently asked questions

Does IGCSE Biology require advanced English?

It requires clear scientific English rather than decorative language. A student must understand the task and state the correct biological relationships precisely, but short well-structured sentences are acceptable.

Should a multilingual student translate all Biology notes?

Use another language to secure understanding when helpful, but keep the essential scientific terms and exam practice in English. Translating every page can consume time without improving the final written response.

Which English mistakes matter most in Biology?

Mistakes that reverse direction, confuse terms, hide the subject of a sentence or omit cause and effect matter most. Minor grammar errors matter less when the scientific meaning remains clear.