Neco Model Questions Vol1 2021 Biology Question 48
Practice objective / multiple choice question 48 from the 2021 Neco Model Questions Vol1 Biology examination.
At rest a person consumes oxygen at a rate of 250\,mL\,min\(^{-1}\) and produces carbon dioxide at 200\,mL\,min\(^{-1}\). During vigorous exercise the rates change to 1500\,mL\,min\(^{-1}\) for O\(_2\) consumption and 1200\,mL\,min\(^{-1}\) for CO\(_2\) production.\n\n(a) Calculate the respiratory quotient (RQ) at rest and during exercise.\n(b) Based on the RQ values, indicate which substrate (carbohydrate or fat) is predominantly being oxidised at each condition. (Carbohydrate oxidation gives RQ \approx 1.0, fat oxidation gives RQ \approx 0.7.)
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This is Neco Model Questions Vol1 2021 Biology Question 48. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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