Which one of the following is the main nitrogenous waste product in humans
Correct answer: A. Urea
- A. Urea
- B. Ammonia
- C. Salts
- D. Uric acid
Explanation
Urea is the main nitrogenous waste product in humans, that is produced in the liver after deamination of amino acids.
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About Excretion
Excretion removes metabolic wastes such as carbon dioxide, urea and excess salts, and differs from egestion, which removes undigested food. Questions cover kidney structure, nephron ultrafiltration, selective reabsorption and urine formation, along with the excretory roles of the lungs, skin and liver in maintaining homeostasis.
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