19. RNA is ____ stable to alkaline hydrolysis than DNA because RNA's vicinal ____ group makes the 3'-phosphodiester bond susceptible to ________ cleavage.
(A) more; 2'-OH; nucleophilic
(B) more; 2'-OH; electrophilic
(C) less; 2'-OH; nucleophilic
(D) less; 3'-OH; nucleophilic
(E) more; 3'-OH; electrophilic

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1. 題目解析 這道題目主要探討RNA和...
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