Question

Nitrogenous wastes are formed in the body because of the digestion of

• A. Proteins
• B. Carbohydrates
• C. Fats
• D. All of the above

Answer 1

The correct option is A Proteins

Urea is the major nitrogenous waste product, making up some 80% of it. Urea is formed in the liver, and is excreted by the kidneys in the urine along with the other types of protein waste products. The destruction of proteins in the body gives rise to two classes of waste products: nitrogenous and non-nitrogenous. The non-nitrogenous types of waste products are carbon dioxide and water. Nitrogenous waste products only relate to proteins since only proteins contain nitrogen. The nitrogenous waste products are known as urea, uric acid, creatinine, and hippuric acid.