Waec Model Questions Vol1 2017 Biology Question 2
Practice objective / multiple choice question 2 from the 2017 Waec Model Questions Vol1 Biology examination.
A person drinks 2 L of water that contains 0.5 g of urea per litre. The kidneys filter plasma at a glomerular filtration rate (GFR) of 120 mL min⁻¹. Plasma urea concentration is 0.3 g L⁻¹, and 85 % of the filtered urea is re‑absorbed. Assuming the urine volume equals the water intake, calculate (a) the total amount of urea excreted in a day and (b) the concentration of urea in the urine (in g L⁻¹).
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About This Question
This is Waec Model Questions Vol1 2017 Biology Question 2. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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