Which of the Following is Least Related to Urea

Question

Which of the following is least related to urea?
A) Hepatic synthesis
B) Nitrogenous waste
C) Chemical formula is NH4+
D) Excreted in the urine

Accepted Answer

The chemical formula of urea is CO(NH2)2, while the chemical formula for ammonium is NH4+. Urea and ammonium both contain nitrogen, but they are not the same compound. A, B, and D are all closely related to urea as it is synthesized in the liver, is a nitrogenous waste, and is excreted in urine.