A student uses a flask of warm water covered with wet fabric as a model of a sweating person.
Which limitation makes this model unsuitable for showing a coordinated homeostatic response?
The water can transfer thermal energy to the surrounding air.
The wet fabric can lose water by evaporation from its surface.
The temperature of the water can be measured at regular intervals.
The fabric cannot adjust water release in response to water temperature.
44 exam-style questions on Edexcel GCSE Biology 7.3 Homeostasis and thermoregulation, covering 7.3.1 Importance of a constant internal environment, 7.3.2 Importance of homeostasis, 7.3.3a Thermoregulation via the skin and hypothalamus, and 7.3.3b Vasoconstriction and vasodilation in thermoregulation. Each one has a worked solution and a mark scheme showing where the marks go.