Exam 18: Amino Acid and Nitrogen Metabolism

In mammals excess dietary protein is degraded with amino acid nitrogen being excreted as ________.

The proteasome is a large multisubunit ATP-dependent protease that degrades proteins that have been modified by the attachment of ________.

With appropriate nutrition, animals maintain nitrogen intake and excretion at equivalent rates.

Arginine and methionine can be synthesized by mammals but are generally classed as essential amino acids.