Which of the following nitrogenous compound is much more soluble in water?
Correct answer: C. Ammonia
- A. Uric Acid
- B. Urea
- C. Ammonia
- D. Creatine
Explanation
The correct answer is Ammonia. Ammonia is highly soluble in water, which is why aquatic animals can afford to excrete it in large quantities. It requires about 500 ml of water per gram of nitrogen to dilute it to a nontoxic level. This makes it much more soluble compared to other nitrogenous waste products.Uric acid is the least water-soluble of the options, requiring minimal water for excretion, which is beneficial for land animals like birds and reptiles. Urea is more soluble than uric acid but less than ammonia, making it suitable for mammals. Creatine is related to muscle metabolism and not directly comparable to the nitrogenous excretory compounds in terms of solubility.
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About Homeostasis
Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
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