The principal nitrogenous excretory compound in humans is synthesised:
Correct answer: D. In the liver,but eliminated mostly through kidneys.
- A. In kidneys but eliminated mostly through liver
- B. In kidneys as well as eliminated by kidneys
- C. In liver and also eliminated by the same through bile
- D. In the liver,but eliminated mostly through kidneys.
Explanation
The principle nitrogenous excretory compound in humans is urea.Urea is produced in a series of reactions (urea cycle) which take place in the mitochondrial matrix and cytosol of liver cells. Urea cycle (ornithine cycle) is the series of biochemical reactions that converts ammonia, which is highly toxic, and carbon dioxide to the much less toxic urea during the excretion of metabolic nitrogen derived from the deamination of excess amino acids.The urea is ultimately excreted in solution in urine.
Last updated
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.
Practise Homeostasis
698 free Homeostasis MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A biological defense of our body with greater speed and effectiveness is called:
A capillary tuft from which fluid leaves the circulatory system:
A cell is placed in a solution and it swells. This solution is _
A cell is placed in a solution and swells. This solution is:
A cell whose internal salt concentration is 0.3 /liter is placed in a solution having salt concentration 0.5/liter. The solution is _