Which of the Following is Considered to Be a Nitrogenous

Question

Which of the following is considered to be a nitrogenous waste, and is normally found in urine?
A)Urea
B)Ketones
C)Glucose
D)Hemoglobin
E)Bilirubin

Accepted Answer

Urea is a nitrogenous waste product that is produced in the liver from the breakdown of amino acids, and it is normally found in urine. Ketones are not nitrogenous, and they are not normally found in urine unless a person has a metabolic disorder called ketonuria. Glucose is not a waste product, and it is normally filtered out of the urine by the kidneys to be reabsorbed back into the bloodstream. Hemoglobin and bilirubin are both breakdown products of red blood cells, and they are not normally found in urine unless there is a problem with the liver or the kidneys.