Nitrogenous wastes are produced by
A)the breakdown of complex sugars.
B)salts that are not incorporated in cellular metabolism.
C)production of proteins.
D)breakdown of proteins.
E)production of nucleic acids.

Question

Quizplus · Accepted Answer

Nitrogenous wastes are mainly produced by the breakdown of proteins. When proteins are broken down, the nitrogen-containing amino groups are removed and converted into ammonia, which is a toxic substance. Animals must then convert the ammonia into less toxic compounds such as urea or uric acid to be excreted.

Nitrogenous Wastes Are Produced by