What is One Disadvantage of Excreting Urea as Opposed to Uric

Question

What is one disadvantage of excreting urea as opposed to uric acid?
A) Urea is more toxic than uric acid.
B) Urea is less toxic than uric acid.
C) Urea is excreted by respiratory structures.
D) Urea requires more water for excretion.
E) Urea is produced from ammonia, not nucleic acids.

Accepted Answer

Urea requires more water for its excretion compared to uric acid, which is a significant disadvantage for organisms living in arid environments or those with limited access to water. Uric acid is less soluble in water and is excreted as a paste or solid, conserving water, whereas urea is dissolved in water, necessitating the use of more water to excrete it.