CIE iGCSE Co-Ordinated Science B13.3 Homeostasis Exam Style Questions Paper 3
Question
(a) Fig. 7.1 shows a cross‐section through human skin.
(i) Table 7.1 shows some information about two of the parts labelled in Fig. 7.1.
Complete Table 7.1.
(ii) A human has a fat layer in the skin of 3cm.
A whale has a fat layer in the skin of 50cm.
Explain why whales are better adapted to a cold environment.
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(b) Tick (√) two boxes to show the role of the brain in the maintenance of internal body temperature.
(c) State the word that is used to describe the maintenance of a constant internal environment.
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▶️Answer/Explanation
Ans : 7(a)(i)
7(a)(ii) whales have a thicker fat layer ;
fat provides insulation / ref to insulator etc ;
7(b)
7(c) homeostasis ;