Igcse Model Questions Vol1 2018 Biology Question 8
Practice objective / multiple choice question 8 from the 2018 Igcse Model Questions Vol1 Biology examination.
A small mammal of mass \(200\ \text{g}\) has a surface area of \(0.03\ \text{m}^2\). Heat is lost to the environment according to \(\dot{Q}_{\text{loss}} = k A (T_{\text{core}} - T_{\text{amb}})\) where the thermal conductance coefficient \(k = 10\ \text{W m}^{-2}\,^{\circ}\text{C}^{-1}\), core temperature \(T_{\text{core}} = 37^{\circ}\text{C}\) and ambient temperature \(T_{\text{amb}} = 5^{\circ}\text{C}\). The animal's basal metabolic heat production is \(0.02\ \text{W g}^{-1}\). When shivering, metabolic heat production increases by 30 %. Can shivering alone generate enough heat to balance the loss? State "yes" or "no" and give the net heat balance (in watts).
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About This Question
This is Igcse Model Questions Vol1 2018 Biology Question 8. It is one of the objective questions from the 2018 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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