Extended Response (6-Mark) Questions — Biology

Six-mark extended response questions appear on both Biology papers in AQA GCSE Combined Science: Trilogy (8464). These questions use levels-based marking, which means the examiner assesses the overall quality of your response rather than ticking off individual points. This lesson teaches you how to plan, structure and write Level 3 answers for Biology topics.

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How Levels-Based Marking Works

Level	Marks	Description
Level 3	5–6	A detailed, comprehensive answer. Scientific knowledge is accurate and relevant. The answer is logically structured and uses correct scientific terminology.
Level 2	3–4	A reasonable answer. Some relevant scientific knowledge but may lack detail, contain minor errors, or lack logical structure.
Level 1	1–2	Limited relevant knowledge. Answer may be fragmented, contain errors, or lack a clear structure.
No relevant content	0	Nothing creditworthy.

Exam Tip: The key difference between Level 2 and Level 3 is structure and completeness. A muddled answer with correct science scores Level 2. A well-organised answer with accurate, relevant science scores Level 3.

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The 6-Mark Answer Planning Flowchart