Igcse Model Questions Vol1 2022 Biology Question 7
Practice objective / multiple choice question 7 from the 2022 Igcse Model Questions Vol1 Biology examination.
At rest a person loses heat by radiation (\(100\) W), convection (\(50\) W) and evaporation (\(30\) W). These losses exactly balance the metabolic heat production at rest. During vigorous exercise the metabolic heat production rises to \(500\) W while the rates of heat loss by radiation and convection remain unchanged. Assuming the latent heat of vapourisation of water is \(2.43\) kJ g⁻¹, determine (a) the additional rate of evaporative heat loss required to maintain constant body temperature, and (b) the corresponding increase in sweat loss in millilitres per minute. Give your answer for (b) to one decimal place.
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This is Igcse Model Questions Vol1 2022 Biology Question 7. It is one of the objective questions from the 2022 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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