plumiHomeostasis: CAIE IGCSE Biology questions
Every CAIE IGCSE Biology exam question on 14.4 Homeostasis, June 2024 and the specimen papers, with its mark scheme and examiner’s report.
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Calculations
Q2(a)(i)
The whole paper ↗![June 2024 Paper 4, question 2(a)(i): The internal body temperature range is from 36.4 °C to 37.0 °C. State the range of the external environmental temperature shown in Fig. 2.1. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/061041-jun24-02-ai-qp.webp)
Q2(a)(ii)
The whole paper ↗![June 2024 Paper 4, question 2(a)(ii): Explain the results for the internal body temperature shown in Fig. 2.1. [6]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/061041-jun24-02-aii-qp.webp)
Q2(b)
The whole paper ↗
Q2(b)(i)
The whole paper ↗![Specimen Paper 4, question 2(b)(i): Calculate the percentage increase in the blood glucose concentration in person A between 60 and 90 minutes. Give your answer to the nearest whole number. % [3]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/061004-spec-02-bi-qp.webp)
Q2(b)(ii)
The whole paper ↗![Specimen Paper 4, question 2(b)(ii): Using Fig. 2.1, compare the response of person A with the response of person B after the ingestion of glucose. [3]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/061004-spec-02-bii-qp.webp)
Q2(b)(iii)
The whole paper ↗![Specimen Paper 4, question 2(b)(iii): Using Fig. 2.1, explain the response of person B after 90 minutes. [4]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/061004-spec-02-biii-qp.webp)
Q2(b)(iv)
The whole paper ↗![Specimen Paper 4, question 2(b)(iv): Person A had Type 1 diabetes. Outline the treatment of Type 1 diabetes. [2] [Total: 15]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/061004-spec-02-biv-qp.webp)
All 11 questions on Homeostasis, as a list
- June 2024, Paper 1, Q29 (1 mark): Where is insulin secreted, and what is its effect on blood glucose concentration? effect on blood secreted by glucose concentration A liver increases B liver de
- June 2024, Paper 2, Q27 (1 mark): What describes how the body maintains a constant internal temperature on a hot day? A Vasoconstriction increases blood flow to the skin surface capillaries. B V
- June 2024, Paper 2, Q28 (1 mark): What would lead to a decrease in blood glucose concentration? A increased release of adrenaline B increased release of amylase C increased release of glucagon D
- June 2024, Paper 4, Q2(a)(i) (1 mark): The internal body temperature range is from 36.4 °C to 37.0 °C. State the range of the external environmental temperature shown in Fig. 2.1. [1]
- June 2024, Paper 4, Q2(a)(ii) (6 marks): Explain the results for the internal body temperature shown in Fig. 2.1. [6]
- June 2024, Paper 4, Q2(b) (3 marks): Fig. 2.2 shows a cross‑section through human skin. F A E B D C Fig. 2.2 Table 2.1 shows the names of some parts of the skin, the letter identifying the part in
- Specimen, Paper 2, Q26 (1 mark): The diagram shows part of the mechanism that controls blood sugar concentration. liver 3 more glycogen in the liver 4 less glycogen in the liver 1 more glucose
- Specimen, Paper 4, Q2(b)(i) (3 marks): Calculate the percentage increase in the blood glucose concentration in person A between 60 and 90 minutes. Give your answer to the nearest whole number. % [3]
- Specimen, Paper 4, Q2(b)(ii) (3 marks): Using Fig. 2.1, compare the response of person A with the response of person B after the ingestion of glucose. [3]
- Specimen, Paper 4, Q2(b)(iii) (4 marks): Using Fig. 2.1, explain the response of person B after 90 minutes. [4]
- Specimen, Paper 4, Q2(b)(iv) (2 marks): Person A had Type 1 diabetes. Outline the treatment of Type 1 diabetes. [2] [Total: 15]
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