IGCSE Practice

Cambridge IGCSE·Co-ordinated Sciences 0654·Biology Blood
📋Key knowledge — Transport In Animals

Formulas & equations

  • Cardiac output = heart rate × stroke volume

Key facts & rules

  • Double circulation: pulmonary (heart → lungs → heart) and systemic (heart → body → heart).
  • Arteries: carry blood AWAY from heart; thick walls, small lumen, high pressure, no valves.
  • Veins: carry blood TOWARDS heart; thin walls, large lumen, low pressure, have valves.
  • Capillaries: one cell thick wall, where exchange of gases and nutrients occurs.
  • Red blood cells: no nucleus, biconcave, contain haemoglobin — carry O₂.
  • Haemoglobin + O₂ ⇌ oxyhaemoglobin (in lungs); releases O₂ in tissues.
  • White blood cells: phagocytes (engulf pathogens) and lymphocytes (produce antibodies).
  • Plasma: transports dissolved substances — glucose, CO₂, urea, hormones, antibodies.
  • Platelets: involved in blood clotting.
  • Heart: left side pumps oxygenated blood; right side pumps deoxygenated blood.

IGCSE Biology — Blood

17 Cambridge IGCSE 0654 questions on blood, across all three components.

About blood on IGCSE 0654

Every Cambridge IGCSE Co-ordinated Sciences 0654 question on blood (Transport in animals, Biology), across all three exam components. Theory and alternative-to-practical come with full mark schemes; multiple choice is interactive — click an option to check it.

Theory

Papers 3 & 4 · 8 questions · Structured written questions, each with its full mark scheme.
Blood — Core theory questions1 total · Paper 3

Exercise 1 — IGCSE 0654 Mar 2024 Paper 32 Q10

Cambridge past paperCore11 marks Paper 32Mar 2024
IGCSE 0654 Mar 2024 Paper 32 Question 10 — Blood
Show mark scheme
Mark scheme for IGCSE 0654 Mar 2024 Paper 32 Q10
Blood — Extended theory questions7 total · Paper 4

Exercise 2 — IGCSE 0654 Nov 2025 Paper 42 Q1

Cambridge past paperExtended10 marks Paper 42Nov 2025
IGCSE 0654 Nov 2025 Paper 42 Question 1 — Blood
Show mark scheme
Mark scheme for IGCSE 0654 Nov 2025 Paper 42 Q1

Exercise 3 — IGCSE 0654 Jun 2025 Paper 43 Q1

Cambridge past paperExtended10 marks Paper 43Jun 2025
IGCSE 0654 Jun 2025 Paper 43 Question 1 — Blood
Show mark scheme
Mark scheme for IGCSE 0654 Jun 2025 Paper 43 Q1

Exercise 4 — IGCSE 0654 Mar 2025 Paper 42 Q4

Cambridge past paperExtended8 marks Paper 42Mar 2025
IGCSE 0654 Mar 2025 Paper 42 Question 4 — Blood
Show mark scheme
Mark scheme for IGCSE 0654 Mar 2025 Paper 42 Q4
↑ Back to top

Multiple choice

Papers 1 & 2 · 9 questions · Click an option (A–D) to check your answer instantly.
Blood — Core multiple choice questions5 total · Paper 1

Exercise 1 — IGCSE 0654 Oct/Nov 2025 Paper 11 Q9

Cambridge past paperCore1 mark Paper 11Oct/Nov 2025
IGCSE 0654 Oct/Nov 2025 Paper 11 Question 9 — Blood
Show answer
Correct answer: C

Exercise 2 — IGCSE 0654 May/June 2024 Paper 11 Q7

Cambridge past paperCore1 mark Paper 11May/June 2024
IGCSE 0654 May/June 2024 Paper 11 Question 7 — Blood
Show answer
Correct answer: C

Exercise 3 — IGCSE 0654 May/June 2024 Paper 12 Q7

Cambridge past paperCore1 mark Paper 12May/June 2024
IGCSE 0654 May/June 2024 Paper 12 Question 7 — Blood
Show answer
Correct answer: D

Exercise 4 — IGCSE 0654 May/June 2024 Paper 13 Q7

Cambridge past paperCore1 mark Paper 13May/June 2024
IGCSE 0654 May/June 2024 Paper 13 Question 7 — Blood
Show answer
Correct answer: D
Blood — Extended multiple choice questions4 total · Paper 2

Exercise 5 — IGCSE 0654 March 2025 Paper 22 Q1

Cambridge past paperExtended1 mark Paper 22March 2025
IGCSE 0654 March 2025 Paper 22 Question 1 — Blood
Show answer
Correct answer: A

Exercise 6 — IGCSE 0654 Oct/Nov 2024 Paper 22 Q7

Cambridge past paperExtended1 mark Paper 22Oct/Nov 2024
IGCSE 0654 Oct/Nov 2024 Paper 22 Question 7 — Blood
Show answer
Correct answer: D

Exercise 7 — IGCSE 0654 Oct/Nov 2023 Paper 23 Q2

Cambridge past paperExtended1 mark Paper 23Oct/Nov 2023
IGCSE 0654 Oct/Nov 2023 Paper 23 Question 2 — Blood
Show answer
Correct answer: C

Exercise 8 — IGCSE 0654 May/June 2022 Paper 22 Q8

Cambridge past paperExtended1 mark Paper 22May/June 2022
IGCSE 0654 May/June 2022 Paper 22 Question 8 — Blood
Show answer
Correct answer: B
↑ Back to top

More Transport in animals subtopics