It is a cyclic process of enzymatic reactions which operates in the liver cells as a result of which urea is formed from ammonia, carbondioxide and NH2 group:
Correct answer: A. Ornithine cycle
- A. Ornithine cycle
- B. Citrulline cycle
- C. Arginine cycle
- D. All of these
Explanation
Ornithine cycle is the correct term for the urea cycle. Ornithine, a non-protein amino acid, is used as a carrier molecule in this cycle. It involves a series of enzymatic reactions that occur in the mitochondria and cytoplasm of liver cells, ultimately leading to the formation of urea.
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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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