0653.B9.4.03 — State the functions of the following components of blood: (a). red blood cells in transporting oxygen, including the role of haemoglobin (b): past paper questions
Real questions on 0653.b9.4.03 — state the functions of the following components of blood: (a). red blood cells in transporting oxygen, including the role of haemoglobin (b)
The newest 13 of 13 written questions. Open one to see it on the real paper.
- 0653/31 · October/November 2025 · Q3c(iii)[1]
State the component of blood that transports carbohydrates and other nutrients around the body.
See it on the paper → - 0653/32 · October/November 2025 · Q2c(ii)[1]
State the component of blood that transports oxygen.
See it on the paper → - 0653/33 · October/November 2025 · Q2c(ii)[1]
State the component of blood that transports oxygen.
See it on the paper → - 0653/42 · October/November 2025 · Q2b(i)[2]
Describe how platelets in the blood help prevent bacterial infection.
See it on the paper → - 0653/32 · May/June 2025 · Q1a(ii)[1]
State one function of white blood cells. (ii)
See it on the paper → - 0653/43 · May/June 2025 · Q1a(ii)[1]
State one function of the blood component labelled Z on Fig. 1.1.
See it on the paper → - 0653/43 · May/June 2025 · Q1b(i)[2]
Describe evidence from Fig. 1.2 that the blood vessel labelled R is a vein.
See it on the paper → - 0653/42 · February/March 2025 · Q2c[1]
Blood produces antibodies in response to infections by pathogens. State the component of blood that produces antibodies.
See it on the paper → - 0653/32 · October/November 2024 · Q4b[2]
Two components of blood are red blood cells and plasma. State one similarity between the function of red blood cells and the function of plasma and one difference. similarity difference
See it on the paper → - 0653/33 · October/November 2024 · Q4b[2]
Two components of blood are red blood cells and plasma. State one similarity between the function of red blood cells and the function of plasma and one difference. similarity difference
See it on the paper → - 0653/21 · May/June 2024 · Q21[1]
Which aqueous substances form a white precipitate when they are mixed?
See it on the paper → - 0653/32 · February/March 2024 · Q4a(i)[1]
State the component of blood involved in phagocytosis.
See it on the paper → - 0653/22 · May/June 2023 · Q8[1]
Which blood components are likely to be at a lower level than normal?
See it on the paper →
What examiners said
Some candidates answered this question well, giving antibody production or phagocytosis. Credit was also given for stating that white blood cells destroy or kill pathogens. Responses such as white blood cells fight or protect against infections or diseases were not acceptable because they were too vague.
— Examiner report, May/June 2025, 0653/32 Q1(a)(ii) (Cambridge)
Candidates found this question demanding. Candidates needed to recognise the cell as a white blood cell and then recall its function. Many referred to its role in destroying pathogens, but this was not sufficient for credit. They needed to describe either the production of antibodies or the process of phagocytosis. Only a few candidates could do this.
— Examiner report, May/June 2025, 0653/43 Q1(a)(ii) (Cambridge)
In this question, candidates needed to use evidence from the diagram. Some candidates described valves and low pressure, but these could not be observed in the diagram and so were not credited. Candidates should use the term lumen for the space inside the walls of a blood vessel.
— Examiner report, May/June 2025, 0653/43 Q1(b)(i) (Cambridge)
Past papers, syllabus and examiner reports © UCLES (Cambridge University Press & Assessment). Questions are matched to topics from the official syllabus. AssessPro is independent and not endorsed by Cambridge.