Exercise 1 — IGCSE 0653 May/Jun 2023 Paper 32 Q1
Show mark scheme
D
Cambridge IGCSE·Combined Sciences 0653·Biology
Transport In Animals
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 — Transport in Animals
42 Cambridge IGCSE 0653 Combined Sciences past paper questions on transport in animals, across Theory, Multiple Choice and Alternative to Practical.
About Transport in Animals on IGCSE 0653
The circulatory system transports oxygen, nutrients, hormones and waste products around the body. Students must know the structure and function of the heart, blood vessels and blood components.
What's covered:
- The heart: structure, chambers, valves
- Arteries, veins and capillaries
- Blood: red blood cells, white blood cells, platelets, plasma
- Haemoglobin and oxygen transport
- Double circulation
Theory
Transport in Animals — Core2 · Paper 3
Exercise 2 — IGCSE 0653 May/Jun 2024 Paper 33 Q1
Show mark scheme
pulmonary (vein)
Transport in Animals — Extended7 · Paper 4
Exercise 1 — IGCSE 0653 Mar 2025 Paper 42 Q1
Show mark scheme
hawk / snake
Exercise 2 — IGCSE 0653 May/Jun 2023 Paper 41 Q1
Show mark scheme
artery
Exercise 3 — IGCSE 0653 May/Jun 2023 Paper 43 Q7
Show mark scheme
either atrium labelled
Exercise 4 — IGCSE 0653 May/Jun 2024 Paper 41 Q1
Show mark scheme
ventricle
Exercise 5 — IGCSE 0653 May/Jun 2024 Paper 42 Q7
Show mark scheme
X pulmonary vein
Exercise 6 — IGCSE 0653 May/Jun 2025 Paper 43 Q1
Show mark scheme
red blood cell
Exercise 7 — IGCSE 0653 Oct/Nov 2023 Paper 42 Q7
Show mark scheme
thick (muscular) wall
Multiple choice
Transport in Animals — Core MCQ6 · Paper 1
Question 1 — IGCSE 0653 May/Jun 2023 Paper 13 Q4
Show answer
Correct answer: D
Question 2 — IGCSE 0653 May/Jun 2023 Paper 13 Q5
Show answer
Correct answer: C
Question 3 — IGCSE 0653 May/Jun 2023 Paper 13 Q6
Show answer
Correct answer: A
Question 4 — IGCSE 0653 May/Jun 2025 Paper 13 Q4
Show answer
Correct answer: B
Question 5 — IGCSE 0653 May/Jun 2025 Paper 13 Q5
Show answer
Correct answer: A
Question 6 — IGCSE 0653 May/Jun 2025 Paper 13 Q6
Show answer
Correct answer: A
Transport in Animals — Extended MCQ22 · Paper 2
Question 1 — IGCSE 0653 Mar 2023 Paper 22 Q3
Show answer
Correct answer: D
Question 2 — IGCSE 0653 Mar 2023 Paper 22 Q4
Show answer
Correct answer: B
Question 3 — IGCSE 0653 Mar 2023 Paper 22 Q5
Show answer
Correct answer: C
Question 4 — IGCSE 0653 Mar 2024 Paper 22 Q3
Show answer
Correct answer: A
Question 5 — IGCSE 0653 Mar 2024 Paper 22 Q4
Show answer
Correct answer: B
Question 6 — IGCSE 0653 Mar 2024 Paper 22 Q5
Show answer
Correct answer: C
Question 7 — IGCSE 0653 May/Jun 2023 Paper 22 Q4
Show answer
Correct answer: B
Question 8 — IGCSE 0653 May/Jun 2023 Paper 23 Q4
Show answer
Correct answer: C
Question 9 — IGCSE 0653 May/Jun 2023 Paper 22 Q5
Show answer
Correct answer: D
Question 10 — IGCSE 0653 May/Jun 2023 Paper 23 Q5
Show answer
Correct answer: C
Question 11 — IGCSE 0653 May/Jun 2023 Paper 22 Q6
Show answer
Correct answer: C
Question 12 — IGCSE 0653 May/Jun 2023 Paper 23 Q6
Show answer
Correct answer: C
Question 13 — IGCSE 0653 May/Jun 2024 Paper 21 Q1
Show answer
Correct answer: A
Question 14 — IGCSE 0653 May/Jun 2024 Paper 21 Q2
Show answer
Correct answer: D
Question 15 — IGCSE 0653 May/Jun 2024 Paper 23 Q6
Show answer
Correct answer: D
Question 16 — IGCSE 0653 May/Jun 2024 Paper 23 Q7
Show answer
Correct answer: B
Question 17 — IGCSE 0653 May/Jun 2025 Paper 23 Q9
Show answer
Correct answer: C
Question 18 — IGCSE 0653 May/Jun 2025 Paper 23 Q10
Show answer
Correct answer: C
Question 19 — IGCSE 0653 May/Jun 2025 Paper 23 Q11
Show answer
Correct answer: D
Question 20 — IGCSE 0653 Oct/Nov 2023 Paper 22 Q3
Show answer
Correct answer: C
Question 21 — IGCSE 0653 Oct/Nov 2023 Paper 21 Q5
Show answer
Correct answer: A
Question 22 — IGCSE 0653 Oct/Nov 2023 Paper 21 Q6
Show answer
Correct answer: C
Alternative to practical
Transport in Animals — ATP5 questions
Exercise 1 — IGCSE 0653 Mar 2024 Paper 52 Q1
Show mark scheme
results for 0 minute recorded
Exercise 2 — IGCSE 0653 Mar 2024 Paper 62 Q1
Show mark scheme
65.5 (°C)
Exercise 3 — IGCSE 0653 Mar 2024 Paper 52 Q2
Show mark scheme
One marking point from each section and any two others (if one section is missing max 6 etc.).
Exercise 4 — IGCSE 0653 Mar 2024 Paper 62 Q2
Show mark scheme
One marking point from each section and any two others (if one section is missing max 6 etc.).
Exercise 5 — IGCSE 0653 Oct/Nov 2023 Paper 62 Q1
Show mark scheme
8
All Transport in Animals questions in this collection
| Type | Level | Paper | Session | Q# | Marks | Answer / key |
|---|---|---|---|---|---|---|
| ATP | Core | Paper 52 | Mar 2024 | Q1 | 7 marks | results for 0 minute recorded |
| ATP | Core | Paper 52 | Mar 2024 | Q2 | 7 marks | One marking point from each section and any two others (if one section is missin… |
| ATP | Extended | Paper 62 | Mar 2024 | Q1 | 7 marks | 65.5 (°C) |
| ATP | Extended | Paper 62 | Mar 2024 | Q2 | 7 marks | One marking point from each section and any two others (if one section is missin… |
| ATP | Extended | Paper 62 | Oct/Nov 2023 | Q1 | 13 marks | 8 |
| MCQ | Core | Paper 13 | May/Jun 2023 | Q4 | 1 mark | D |
| MCQ | Core | Paper 13 | May/Jun 2023 | Q5 | 1 mark | C |
| MCQ | Core | Paper 13 | May/Jun 2023 | Q6 | 1 mark | A |
| MCQ | Core | Paper 13 | May/Jun 2025 | Q4 | 1 mark | B |
| MCQ | Core | Paper 13 | May/Jun 2025 | Q5 | 1 mark | A |
| MCQ | Core | Paper 13 | May/Jun 2025 | Q6 | 1 mark | A |
| MCQ | Extended | Paper 22 | Mar 2023 | Q3 | 1 mark | D |
| MCQ | Extended | Paper 22 | Mar 2023 | Q4 | 1 mark | B |
| MCQ | Extended | Paper 22 | Mar 2023 | Q5 | 1 mark | C |
| MCQ | Extended | Paper 22 | Mar 2024 | Q3 | 1 mark | A |
| MCQ | Extended | Paper 22 | Mar 2024 | Q4 | 1 mark | B |
| MCQ | Extended | Paper 22 | Mar 2024 | Q5 | 1 mark | C |
| MCQ | Extended | Paper 22 | May/Jun 2023 | Q4 | 1 mark | B |
| MCQ | Extended | Paper 23 | May/Jun 2023 | Q4 | 1 mark | C |
| MCQ | Extended | Paper 22 | May/Jun 2023 | Q5 | 1 mark | D |
| MCQ | Extended | Paper 23 | May/Jun 2023 | Q5 | 1 mark | C |
| MCQ | Extended | Paper 22 | May/Jun 2023 | Q6 | 1 mark | C |
| MCQ | Extended | Paper 23 | May/Jun 2023 | Q6 | 1 mark | C |
| MCQ | Extended | Paper 21 | May/Jun 2024 | Q1 | 1 mark | A |
| MCQ | Extended | Paper 21 | May/Jun 2024 | Q2 | 1 mark | D |
| MCQ | Extended | Paper 23 | May/Jun 2024 | Q6 | 1 mark | D |
| MCQ | Extended | Paper 23 | May/Jun 2024 | Q7 | 1 mark | B |
| MCQ | Extended | Paper 23 | May/Jun 2025 | Q9 | 1 mark | C |
| MCQ | Extended | Paper 23 | May/Jun 2025 | Q10 | 1 mark | C |
| MCQ | Extended | Paper 23 | May/Jun 2025 | Q11 | 1 mark | D |
| MCQ | Extended | Paper 22 | Oct/Nov 2023 | Q3 | 1 mark | C |
| MCQ | Extended | Paper 21 | Oct/Nov 2023 | Q5 | 1 mark | A |
| MCQ | Extended | Paper 21 | Oct/Nov 2023 | Q6 | 1 mark | C |
| Theory | Core | Paper 32 | May/Jun 2023 | Q1 | 9 marks | D |
| Theory | Core | Paper 33 | May/Jun 2024 | Q1 | 9 marks | pulmonary (vein) |
| Theory | Extended | Paper 42 | Mar 2025 | Q1 | 8 marks | hawk / snake |
| Theory | Extended | Paper 41 | May/Jun 2023 | Q1 | 10 marks | artery |
| Theory | Extended | Paper 43 | May/Jun 2023 | Q7 | 8 marks | either atrium labelled |
| Theory | Extended | Paper 41 | May/Jun 2024 | Q1 | 9 marks | ventricle |
| Theory | Extended | Paper 42 | May/Jun 2024 | Q7 | 9 marks | X pulmonary vein |
| Theory | Extended | Paper 43 | May/Jun 2025 | Q1 | 9 marks | red blood cell |
| Theory | Extended | Paper 42 | Oct/Nov 2023 | Q7 | 6 marks | thick (muscular) wall |