Which of the following substances is the end product of nitrogen metabolism?
A)Ammonia
B)Urine
C)Urea
D)Nitrites
E)Nitrates

Question

Quizplus · Accepted Answer

Urea is the end product of nitrogen metabolism in humans and other mammals. Ammonia is toxic and must be converted to urea before being excreted in the urine. Nitrites and nitrates are not end products of nitrogen metabolism but rather are formed during the nitrogen cycle in soil and water.

Which of the Following Substances Is the End Product of Nitrogen