阿摩線上測驗
25. What is one unit of urea biosynthesized from?
(A) two units of 
and one unit of CO2.
(B) one unit of 
as well as one unit of carboxyl and amino groups of arginine.
(C) one unit of 
, one carboxyl group of aspartate, and one unit of amino group of arginine.
(D) one unit of 
, one carboxyl group of arginine, and one unit of amino group of aspartate.
(E) one unit of 
, one unit of CO2 and one unit of amino group of aspartate.
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統計： 尚無統計資料
統計： 尚無統計資料
