A student describes two temperature responses.
Response X increases respiration in skeletal muscles.
Response Y raises hairs so that more still air is trapped next to the skin.
Which statement correctly compares these responses?
X reduces heat loss, whereas Y increases heat production.
X increases heat loss, whereas Y reduces heat production.
X reduces heat production, whereas Y increases heat loss.
X increases heat production, whereas Y reduces heat loss.
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.