Amount of water required to excrete 1gN of Urea is_________?
Correct answer: B. 50 ml
- A. 1 ml
- B. 50 ml
- C. 100 ml
- D. 150 ml
Explanation
Urea requires about 50 mL of water for the excretion of 1 g of nitrogen, so the value is 50 mL per gram of nitrogen. The likely distractor is 100 mL, which may result from doubling the standard approximate value or confusing urea with a more water-demanding nitrogenous waste.
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