What nitrogenous waste is produced by protein catabolism?

Question:

A Disease of the Brain:

Hepatic encephalopathy is a disease of the brain in which metabolic toxins are not adequately processed by the liver. Because of this, blood levels of the toxins become too high, and as a result, they are able to leak into the brain itself, causing this disease. Symptoms can involve changes in personality, decrease in cognition, or even coma.

Answer and Explanation: 1