Urea is ________.
A) insoluble in water
B) the primary nitrogenous waste product of humans
C) the primary nitrogenous waste product of most birds
D) the primary nitrogenous waste product of most aquatic invertebrates

Question

Quizplus · Accepted Answer

Urea is the primary nitrogenous waste product of humans, which is formed in the liver from ammonia and excreted by the kidneys. It is soluble in water and can be easily excreted in the urine. Option A is incorrect because urea is actually soluble in water. Option C is incorrect because the primary nitrogenous waste product of most birds is uric acid. Option D is incorrect because most aquatic invertebrates excrete ammonia as their primary nitrogenous waste product.

Urea Is ________