Gce Model Questions Vol1 2017 Biology Question 23
Practice objective / multiple choice question 23 from the 2017 Gce Model Questions Vol1 Biology examination.
An individual consumes \(20\ \text{g}\) of protein in a meal. Protein contains \(16\%\) nitrogen by weight. Of the absorbed nitrogen, \(85\%\) is converted to urea and excreted in the urine. The total urine volume produced over the next 24 h is \(1.5\ \text{L}\). Given that the molecular weight of urea is \(60\ \text{g·mol}^{-1}\) and each urea molecule contains two nitrogen atoms (atomic weight \(14\ \text{g·mol}^{-1}\)), calculate the concentration of urea in the urine in \(\text{g·L}^{-1}\).
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This is Gce Model Questions Vol1 2017 Biology Question 23. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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