ECOLOGY
EXCRETORY PRODUCTS AND THEIR ELIMINATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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liver from glycogen
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kidneys from glycerol and fatty acids
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bladder from uric acid and water
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liver from NH3 and carbon dioxide
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Detailed explanation-1: -It is formed as a result of the breakdown of proteins. The proteins are broken down to form ammonia which then combines with carbon dioxide leading to the formation of urea. It is a less toxic nitrogenous waste that is passed out together with the urine.
Detailed explanation-2: -In the liver, mitochondrial and cytosolic enzymes work together to produce urea from ammonia in a process called theurea cycle (Fig. 5.6).
Detailed explanation-3: -The liver-the detoxification organ With the help of specific catalysts in the liver cells carbon dioxide reacts chemically with the ammonia molecule, NH3. The less toxic nitrogenous compound urea is produced together with water. This series of reactions is called the ornithine cycle.
Detailed explanation-4: -So the correct answer is the liver.
Detailed explanation-5: -It is the site where protein is metabolized to form ammonia. The ammonia is then converted to form urea. Urea is a nitrogenous waste that is present in the urine of ureotelic organisms.