ECOLOGY
EXCRETORY PRODUCTS AND THEIR ELIMINATION
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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: -Urea, commonly referred to as blood urea nitrogen (BUN) when measured in the blood, is a product of protein metabolism. BUN is considered a non-protein nitrogenous (NPN) waste product. Amino acids derived from the breakdown of protein are deaminated to produce ammonia.
Detailed explanation-2: -Urea is produced in the liver and is a metabolite (breakdown product) of amino acids. Ammonium ions are formed in the breakdown of amino acids. Some are used in the biosynthesis of nitrogen compounds.
Detailed explanation-3: -Urea is a nitrogenous waste that is excreted in urine. Ammonia is converted into urea, which is less toxic and requires less water to remove from the body.
Detailed explanation-4: -Nitrogenous wastes are formed from the metabolism of protein in the liver. The proteins are metabolized or broken down to form amino acids which further break down to form the nitrogenous waste. The nitrogenous wastes include, urea, uric acid, ammonia, etc.