第七章单元测试
In eukaryotic cell, （ ） is located in the nucleoplasm. It is responsible for the synthesis of the precursors of 5S rRNA, tRNAs and other small nuclear and cytosolic RNAs.
- In eukaryotic cell, the largest subunit of RNA polymerase II has a _____ amino acid repeat at the C terminus called the carboxy-terminal domain (CTD).（ ）
RNA Pol Ⅲ transcribes 5S rRNA component of the small ribosomal subunit, which is the only rRNA subunit to be transcribed separately.
Some RNA Pol II promoters have neither a TATA box nor an initiator element. These genes are generally transcribed at high rates, and initiation of transcription may occur at different start sites over a length of up to 200 bp.
（ ）binds to TATA box. It is a multiprotein complex of TBP and TAFⅡs (TBP-associated factors).
A:RNA polymerase I B:RNA polymerase III C:RNA polymerase Ⅳ D:RNA polymerase II
答案:RNA polymerase III
A:seven B:five C:four D:six
A:错 B:对
A:错 B:对
A:TFⅡA B:TFⅡC C:TFⅡB D:TFⅡD
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