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AQA · GCSE · Biology

Diffusion
Practice Questions

15 AQA GCSE Biology questions on Diffusion, each with instant feedback and a full examiner-style mark scheme.

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✨ Revision guide includes key terms, worked examples and exam technique for Diffusion.

Try 2 sample questions on Diffusion

Question 1 · 1 mark · Difficulty 1/3

Diffusion is the net movement of particles from a region of:

  1. Higher concentration to lower concentration
  2. Lower concentration to higher concentration
  3. High pressure to low temperature
  4. Solid to gas only
Show answer & explanation
✓ Answer: AHigher concentration to lower concentration
Diffusion is the spreading of particles from where they are more concentrated to where they are less concentrated, down a concentration gradient.
Question 2 · 1 mark · Difficulty 2/3

Which of these is an example of diffusion in the body?

  1. Oxygen moving from the alveoli into the blood
  2. Water being pumped uphill in a plant
  3. Bones growing
  4. Hair turning grey
Show answer & explanation
✓ Answer: AOxygen moving from the alveoli into the blood
Oxygen diffuses from a high concentration in the alveoli to a lower concentration in the blood. This is a key gas exchange process.
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AQA GCSE Biology: Diffusion FAQ

How many AQA GCSE Biology questions on Diffusion are there on Kramizo?
Kramizo currently has 15 exam-board-aligned practice questions on Diffusion for AQA GCSE Biology, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real AQA paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for AQA GCSE students preparing for Biology?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Diffusion practice with other Biology topics or even switch to a totally different AQA subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Diffusion questions aligned to the official AQA GCSE Biology syllabus?
Every question is written against the published AQA GCSE Biology specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real AQA paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from AQA.
How is Diffusion typically tested on AQA GCSE Biology papers?
Diffusion appears across multiple question types on real AQA GCSE Biology papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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