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AQA GCSE Biology (8461)

AQA GCSE Biology, keyword by keyword.

Your tutor explains each process, quizzes you on the keywords that earn marks, and helps you get the 10 required practicals clear.

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Explain how villi increase the rate of absorption in the small intestine.[3 marks]

This is worth 3 marks. They go for:

  • Villi give a large surface area (1 mark)
  • Their walls are one cell thick, giving a short diffusion distance (1 mark)
  • A good blood supply keeps a steep concentration gradient (1 mark)

Examiner tip: Link each feature to how it speeds up absorption. Listing features without the “so” costs marks.

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Assessment

How AQA GCSE Biology is assessed

Two papers, each worth half the grade, at the same tier. Foundation tier covers grades 1–5 and Higher tier grades 4–9. A Higher student who just misses grade 4 can be awarded a 3.

Specification 8461, first examined in 2018.

Foundation or Higher tier

  • Paper 1

    Multiple choice, structured, short and open answers on topics 1–4

    Time
    1 h 45 min
    Marks
    100
    Weight
    50%

  • Paper 2

    Multiple choice, structured, short and open answers on topics 5–7

    Time
    1 h 45 min
    Marks
    100
    Weight
    50%

Both papers are taken at the same tier, at the end of the course.

There are 10 required practicals, such as microscopy, osmosis, food tests and the effect of light intensity on photosynthesis. Questions based on them are part of both papers.

From the official AQA syllabus, checked October 2026. Read the syllabus

Syllabus content

What’s on the AQA GCSE Biology syllabus

Paper 1

  • Cell biology
  • Organisation
  • Infection and response
  • Bioenergetics

Paper 2

  • Homeostasis and response
  • Inheritance, variation and evolution
  • Ecology

Where marks are lost

Common AQA GCSE Biology mistakes

  • Naming the wrong limiting factor.

    The limiting factor is the one that raises the rate when you increase it. Where the graph levels off, something else is limiting.

  • Saying a vaccine contains antibodies.

    A vaccine contains dead or inactive pathogens. White blood cells respond by making antibodies and memory cells.

  • Mixing up homozygous and heterozygous.

    Homozygous means two copies of the same allele. Heterozygous means two different alleles.

Six biology tutors, six ways to learn

Practise past-paper style questions with the exam coach, drill facts before a test with quick revision, or slow down with a step-by-step tutor. Switch any time.

See how each one teaches How the AI tutor works
  • KaiConcept explainer
  • ElenaStep by step
  • SamuelExam coach
  • MayaQuick revision
  • JonahChallenger
  • NiaConfidence builder

Recorded your Biology lesson?

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FAQ

AQA GCSE Biology questions, answered.

Yes. The exam coach shows how extended answers are marked, then marks yours and tells you which points to add.

Yes. Ask about the method, variables and results for any of the 10, then practise exam questions on them.

Yes. Send a photo of a diagram from your textbook and ask your tutor to talk you through it or quiz you on the labels.

Yes. The free plan includes 5 tutor messages and 15 minutes of calls a day. Pro and Max give you more when exams get close.

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More AQA GCSE subjects

Biology in other curricula