An Advantage of Excreting Nitrogenous Wastes as Urea Rather Than

question 32

Multiple Choice

An advantage of excreting nitrogenous wastes as urea rather than as ammonia is that

• A) urea can be exchanged for Na+.
• B) urea is less toxic than ammonia.
• C) urea requires more water for excretion than ammonia.
• D) urea does not affect the osmolarity gradient.
• E) less nitrogen is removed from the body.

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