题目内容

Which compound provide nitrogen for N3 and N9of purine ring ? ( )

A. Gln
B. Gly
C. Ala
D. Asp

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The most abundant protein in plasma is ( )

A. albumins
B. α1-globular protein
C. α2-globular protein
D. β-globular protein

The reading direction of genetic codon is ( )

A. no directions
B. 3′→5′
C. 5′→3′
D. N terminus→C terminus

The product of translation is ( ).

A. protein
B. DNA
C. RNA
D. dNTP

The RNA polymerase Ⅲ of eukaryotic cell catalizes the synthesis of ( ).

A. Pre-rRNA(45S-rRNA )
B. hnRNA
C. tRNA
D. miRNA