Free Blood questions for IGCSE Biology (0610), part of Transport. Each question has the answer and the marking points an examiner would look for.
Generate a full Blood worksheet →All Transport questionsWhich row is correct for the cells in blood?
| red blood cells | phagocytes | lymphocytes | |
|---|---|---|---|
| A | no nucleus | engulf pathogens | produce antibodies |
| B | large nucleus | engulf pathogens | produce antibodies |
| C | no nucleus | produce antibodies | engulf pathogens |
| D | no nucleus | engulf pathogens | clot blood |
Answer: A
What carries carbon dioxide in the blood mainly?
Answer: A
Which statement describes phagocytes?
Answer: B
A person cuts their finger and the blood clots.
Describe the role of fibrinogen in clotting.
Explain why clotting is important.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | converted to fibrin mesh traps cells soluble fibrinogen is converted to insoluble fibrin B1 fibrin forms a mesh that traps red blood cells B1 | 2 |
| (b) | stops blood loss and pathogens prevents loss of blood B1 prevents entry of pathogens B1 | 2 |
A blood smear is viewed under a microscope.
Describe how a phagocyte can be identified.
Explain how a phagocyte destroys bacteria.
Explain how lymphocytes help destroy pathogens.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | lobed nucleus, larger larger cell with a lobed nucleus B1 | 1 |
| (b) | engulfs and digests it engulfs the bacterium B1 and digests it with enzymes (phagocytosis) B1 | 2 |
| (c) | produce antibodies specific to antigen lymphocytes produce antibodies B1 which are specific to the antigens on the pathogen B1 | 2 |
Blood consists of plasma, red blood cells, white blood cells and platelets.
State the function of each component.
Describe two ways in which white blood cells protect the body.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | plasma transports; RBC oxygen; WBC defence; platelets clotting plasma: transport of dissolved substances (CO₂, nutrients, urea, hormones) B1 red blood cells: carry oxygen B1 white blood cells: defend against pathogens B1 platelets: blood clotting B1 | 4 |
| (b) | phagocytosis; antibodies phagocytes engulf and digest pathogens (phagocytosis) B1 lymphocytes produce antibodies B1 | 2 |
Riyaz Shaikh has mentored IGCSE, IB and A Level students for 15+ years, one-on-one, online and in Mumbai. The hardest questions on this site are the ones he uses to find a student's weak points.
Meet Riyaz →Original Cambridge-style practice questions written for mentorriyaz.in. These are not Cambridge past paper questions, and this site is not affiliated with or endorsed by Cambridge University Press & Assessment. Updated 2026-11-04. Paper generator · mentorriyaz.in