How much water approximately is required to excrete 1 kg of ammonia nitrogen?
Correct answer: D. 500 litre.
- A. 500 ml
- B. 300 litre.
- C. 5 litre.
- D. 500 litre.
Explanation
1kg of ammonia to be excreted in the form of Ammonia requires 500 liters of waterUrea requires 50 liters of waterUric acid requires 1 liter of water
This question appeared on the UHS MDCAT 2008 paper, which you can sit online with every answer explained.
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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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