A person begins to shiver after entering a cold room.
Which change directly increases heat production?
an increased rate of respiration in contracting muscles
an increased rate of evaporation from the skin surface
a decreased rate of respiration in contracting muscles
a decreased rate of evaporation from the skin surface
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.