19. Which of the following descriptions best fits the class of molecules known as
nucleotides
(A) a nitrogenous base and a phosphate group
(B) a nitrogenous base and a ribose
(C) a nitrogenous base, a phosphate group, and a ribose
(D) a ribose and a purine or pyrimidine
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統計: 尚無統計資料
統計: 尚無統計資料