Which of the following is a nitrogenous waste?
A)ammonia
B)urea
C)creatinine
D)All apply.

Question

Quizplus · Accepted Answer

All three options (ammonia, urea, creatinine) are nitrogenous wastes. Ammonia is directly excreted by aquatic animals, but it is toxic to terrestrial animals, so it is converted into urea by the liver in some animals (e.g. mammals, amphibians) and excreted. Creatinine is a waste product of muscle metabolism and is excreted by the kidneys in mammals.

Which of the Following Is a Nitrogenous Waste