Ammonia
A)is soluble in water.
B)can be stored in the body as a precipitate.
C)has low toxicity relative to urea.
D)requires more energy to synthesize than urea.
E)is the major nitrogenous waste excreted by insects.

Question

Quizplus · Accepted Answer

Ammonia is highly soluble in water, which allows it to be easily transported in the bloodstream to the kidneys for excretion. It cannot be stored in the body as a precipitate, as it is highly toxic and must be eliminated rapidly. While it is true that ammonia has lower toxicity than urea, this is not necessarily an advantage, as it requires a large amount of water to dilute and excrete. Finally, while ammonia is a major nitrogenous waste product in aquatic animals such as fish, it is not typically excreted by insects.