Question

urea is a waste produced in the process of breaking down of:

Answer 1

Urea is produced when our liver breaks down proteins/amino acids, and ammonia. ... However, the liver contains a system of carrier molecules and enzymes which quickly converts the ammonia (and carbon dioxide) intourea. The kidneys then transfer the **urea** from the blood to the urine.



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Answer 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. ... Excess ammonium ions are converted to urea.