0654.B13.3.05 — Describe the maintenance of a constant internal body temperature in mammals in terms of: (a). insulation, sweating, shivering, the role of t: past paper questions
Real questions on 0654.b13.3.05 — describe the maintenance of a constant internal body temperature in mammals in terms of: (a). insulation, sweating, shivering, the role of t
The newest 5 of 5 written questions. Open one to see it on the real paper.
- 0973/31 · May/June 2024 · Q7a(ii)[2]
A human has a fat layer in the skin of 3 cm. A whale has a fat layer in the skin of 50 cm. Explain why whales are better adapted to a cold environment.
See it on the paper → - 0973/31 · May/June 2024 · Q7b[2]
Tick ( 3 ) two boxes to show the role of the brain in the maintenance of internal body temperature. has receptors that detect changes in blood temperature contracts to trap air to increase body temperature coordinates response to changes in temperature acts as insulation to decrease body temperature shivers to increase...
See it on the paper → - 0973/32 · May/June 2023 · Q6c(ii)[1]
Suggest why the elephant sprays its skin with water and leaves the water to evaporate.
See it on the paper → - 0973/41 · May/June 2023 · Q1a(ii)[3]
Describe how the blood vessels labelled in Fig. 1.1 try to maintain a constant internal body temperature if internal body temperature increases.
See it on the paper → - 0973/41 · October/November 2022 · Q10b[3]
Describe the role of arterioles in reducing body temperature when the body gets too hot.
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What examiners said
There were some good descriptions of vasodilation, including the widening of the arterioles to enable more blood to flow to the capillaries. Many candidates used the generic term blood vessels throughout. Not many referenced the increased blood flow, specifically to the surface of the skin. Some candidates appeared to be under the misapprehension that capillaries widen or move closer to the surfac...
— Examiner report, May/June 2023, 0973/41 Q1(a)(ii) (Cambridge)
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