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Edexcel · GCSE · Biology

Free Edexcel GCSE Biology
Practice Paper

8 mixed-difficulty practice questions in the style of real Edexcel GCSE papers — answers, mark-scheme-style explanations, and the official exam structure all on one page.

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What the real Edexcel GCSE Biology paper looks like

Paper 1
Approximately 1 hour 30 minutes, ~70-100 marks. Covers Topics 1-4 of the specification.
Paper 2
Approximately 1 hour 30 minutes, ~70-100 marks. Covers Topics 5-8 of the specification.
Paper 3
Where applicable — e.g. Combined Science, Languages. Includes synoptic and applied questions.
Total exam time: ~3 hours across two or three papers.
Grading: Grades: 9 (highest) to 1 (lowest), with U (ungraded). A grade of 4 is a standard pass; 5 is a strong pass.

Mini practice paper: 8 questions

Mixed-difficulty questions from across the Biology syllabus. Tap "Show answer" after each to check yourself.

Q1 · Difficulty 1/3

What is the equation for aerobic respiration?

  1. Glucose → ethanol + CO₂
  2. CO₂ + H₂O → glucose + O₂
  3. Glucose + O₂ → CO₂ + H₂O + energy
  4. Glucose → lactic acid
Show answer & explanation
✓ Answer: C — Glucose + O₂ → CO₂ + H₂O + energy
Aerobic respiration breaks down glucose using oxygen to release energy (ATP). Occurs in mitochondria. Products: CO₂ and H₂O.
Q2 · Difficulty 1/3

Which gas diffuses from the blood into the alveoli?

  1. Nitrogen
  2. Hydrogen
  3. Oxygen
  4. Carbon dioxide
Show answer & explanation
✓ Answer: D — Carbon dioxide
Carbon dioxide is a waste product of respiration and diffuses out of the blood to be exhaled, while oxygen diffuses the other way.
Q3 · Difficulty 1/3

Which type of blood cell forms part of the immune system?

  1. White blood cell
  2. Platelet
  3. Plasma
  4. Red blood cell
Show answer & explanation
✓ Answer: A — White blood cell
White blood cells engulf pathogens or produce antibodies against them. Platelets are involved in clotting.
Q4 · Difficulty 2/3

The net movement of particles from high to low concentration is:

  1. diffusion
  2. active transport
  3. mitosis
  4. translation
Show answer & explanation
✓ Answer: A — diffusion
Diffusion moves particles down a gradient.
Q5 · Difficulty 2/3

What is the magnification formula for a microscope?

  1. Image size + actual size
  2. Image size × actual size
  3. Magnification = image size ÷ actual size
  4. Actual size ÷ image size
Show answer & explanation
✓ Answer: C — Magnification = image size ÷ actual size
M = I/A. If you know two values, rearrange to find the third. Commonly used with the triangle method.
Q6 · Difficulty 2/3

Alveoli are adapted for gas exchange by having a:

  1. large surface area and thin walls
  2. thick muscular wall
  3. waxy cuticle
  4. single cell only
Show answer & explanation
✓ Answer: A — large surface area and thin walls
Large surface area and thin walls speed diffusion.
Q7 · Difficulty 2/3

Red blood cells carry oxygen using the protein:

  1. keratin
  2. collagen
  3. haemoglobin
  4. insulin
Show answer & explanation
✓ Answer: C — haemoglobin
Haemoglobin binds oxygen.
Q8 · Difficulty 2/3

At very high temperatures an enzyme's active site changes shape and the enzyme is:

  1. catalysed
  2. saturated
  3. denatured
  4. activated
Show answer & explanation
✓ Answer: C — denatured
High temperature denatures enzymes.
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Edexcel GCSE Biology FAQ

What does the Edexcel GCSE Biology exam look like?
The Edexcel GCSE Biology exam is structured across 3 components. Paper 1: Approximately 1 hour 30 minutes, ~70-100 marks. Covers Topics 1-4 of the specification. Paper 2: Approximately 1 hour 30 minutes, ~70-100 marks. Covers Topics 5-8 of the specification. Paper 3: Where applicable — e.g. Combined Science, Languages. Includes synoptic and applied questions. Total exam time: ~3 hours across two or three papers.
Can I download a free Edexcel GCSE Biology past paper?
Real Edexcel past papers are published directly by Edexcel on their official website. Kramizo doesn't redistribute copyrighted past papers, but we do generate free AI-written practice papers in the exact same style — same command words, same difficulty tier, same mark conventions. Use this practice paper as warm-up, then time yourself on official past papers before exam day.
How is Edexcel GCSE Biology graded?
Grades: 9 (highest) to 1 (lowest), with U (ungraded). A grade of 4 is a standard pass; 5 is a strong pass. Kramizo's practice questions are tagged with difficulty 1-3 mapping roughly to the lower, middle, and top grade boundaries you'll encounter in the real exam.