Uric acid is the least toxic form of nitrogen waste, allowing organisms that excrete it, such as birds and reptiles, to conserve water. This is because it is less soluble in water and can be excreted as a paste or solid, minimizing water loss compared to more soluble forms of nitrogen waste like ammonia or urea.

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Uric Acid Is

Question 78

Multiple Choice

Uric acid is:

A) often produced by fish.
B) the least energy-expensive way to dispose of nitrogen waste.
C) the least toxic form of nitrogen waste.
D) associated with high water loss.

Correct Answer: