MEDICAL
GALLBLADDER AND EXCRETORY SYSTEM OF THE LIVER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a tube you urinate out of
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waste from the breakdown of proteins
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an organ
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waste product of cellular respiration
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Detailed explanation-1: -They are ammonia, urea, uric acid, and creatinine. All of these substances are produced from protein metabolism.
Detailed explanation-2: -Amino acids may also be metabolized through the liver to form urea, which is then excreted in the urine. Body protein stores can be converted back to essential and nonessential amino acids or may be metabolized, forming waste products and ions, which, as previously detailed, are excreted in the urine.
Detailed explanation-3: -The reaction by which urea decomposes has been studied extensively over the past century. In aqueous solution, urea decomposition yields cyanate and ammonium ions, (NH2)2CO → CNO− + NH4+. An elimination mechanism appears to be operative. Cyanate ion further readily undergoes conversion to CO2 and ammonia.