Definitions for "Urea cycle"
urea formed in the liver by combining nitrogen from amino groups of amino acids with carbon and oxygen from carbon dioxide. Urea is then carried to the kidneys where it is excreted in the urine.
a nitrogen waste pathway found in animals and has never before been seen in a photosynthetic eukaryote like a diatom
A metabolic process in which waste (nitrogen) from the breakdown of proteins in the body is changed by the liver into a urea, excreted in the urine.