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

Question

Quizplus · Accepted Answer

Nitrogenous wastes are produced by the breakdown of proteins. When proteins are broken down, the nitrogen-containing amino acids are converted into ammonia, which is toxic to cells. The ammonia is then converted into less toxic forms such as urea or uric acid, which are excreted by the body as waste.

Nitrogenous Wastes Are Produced by