試題詳解

複選題
18.Concerning the statem nents of RNA and DNA which is/are CORRECT?
(A) The molecular weight of a single-stranded (Ss) RNA is lighter than that of ssDNA with the same length
(B) mRNA is more stable than double-s stranded DNA
(C)  The sugar in DNA and RNA is a pentose
(D) Compare to dsDNA, mRNA tends to form secondary structure
(E) mRNA is more abund dant than rRNA and tRNA in a cell