AQA A-level Biology Paper 3 Essay

The 25-mark essay at the end of AQA Paper 3 is worth more than any other single question, and it’s the one you can prepare for most. Work through these in order.

1. Understand how it’s marked

AQA Paper 3 extended essay: tips, mark scheme and past titles: what examiners want, how the 25 marks are awarded, how to structure your essay, and the style and terminology that earn marks.

2. Choose your topic areas

How to pick topic areas for the essay: how many topic areas you need, how to think of them under pressure, and the topic areas examiners expected for recent titles.

3. See what a good essay looks like

Example AQA Paper 3 extended essay: an essay AQA published as guidance that scored 18/25, a good target for most students. Could you write at this standard? Where could it gain marks?

4. Practise with past and older titles

More AQA Paper 3 essay titles: older titles with matching lists of topic areas. Pick a title, plan it in 5 minutes, then check your topic areas against the list.

5. Think about what might come up

How I worked out possible essay titles (2025): how past titles and the specification can be used to predict likely themes. Useful as practice titles whatever comes up.