Developing bird embryos excrete most of their nitrogenous waste as uric acid because ________.
A) it is less metabolically expensive to produce compared to other waste products
B) it has a low solubility in water and is less toxic to the embryo than other forms of waste
C) it requires less energy to transport across the egg shell
D) it can be recycled by the embryo to make new protein

Question

Quizplus · Accepted Answer

Uric acid has a low solubility in water, which makes it less toxic to the embryo in the egg. This is advantageous for developing bird embryos, as it allows them to excrete waste without harming themselves.

Developing Bird Embryos Excrete Most of Their Nitrogenous Waste as Uric