Metabolic rate Read p 149 Under aerobic metabolism, carbohydrates, proteins and lipids are burnt and produce CO2 The rate of O 2 consumption and CO 2 formation vary with the 3 gps of nutrients (table 6.1) Respiratory quotient (lungs) R = moles CO 2 produced /moles O 2 consumed For convenience, O 2 consumption is used to estimate the metabolic rate Allows to estimate the kind of food that has been burned Because this is cumbersome to calculate, the number 20.2J/ml O 2 is used to calculate the MR from O 2 consumption
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