U1R1E1A1
4 points
UREA is validvalid
two amino radicals joined by a carbonyl group, used by mammals to excrete nitrogen [n UREAS] : UREAL [adj]
a substance found in mammalian urine, the chief form in which nitrogenous waste is excreted [n -S]
two amino radicals joined by a carbonyl group, used by mammals to excrete nitrogen [n UREAS] : UREAL [adj]
a substance found in mammalian urine, the chief form in which nitrogenous waste is excreted [n -S]