PATHOLOGY

Detailed explanation-1: -When you eat proteins, the body breaks them down into amino acids. Ammonia is produced from leftover amino acids, and it must be removed from the body. The liver produces several chemicals (enzymes) that change ammonia into a form called urea, which the body can remove in the urine.

Detailed explanation-2: -The urea cycle is the primary metabolic pathway involved in the removal of nitrogenous waste produced from breakdown of protein and other nitrogen containing compounds.

Detailed explanation-3: -The reaction by which urea decomposes has been studied extensively over the past century. In aqueous solution, urea decomposition yields cyanate and ammonium ions, (NH2)2CO → CNO− + NH4+. An elimination mechanism appears to be operative. Cyanate ion further readily undergoes conversion to CO2 and ammonia.