The advantage of excreting nitrogenous wastes as urea rather than as ammonia is that ________.
A) urea can be removed as a semi-solid paste
B) urea is less toxic than ammonia
C) urea does not affect the osmotic gradient
D) less nitrogen is removed from the body

Question

Quizplus · Accepted Answer

Urea is less toxic than ammonia, which can harm or even kill cells if not quickly removed from the body.

The Advantage of Excreting Nitrogenous Wastes as Urea Rather Than