第五章单元测试
- Which component of the prokaryote RNA polymerase holoenzyme is involved in recognizing promoters specific to certain types of genes? （ ）
- Which RNA polymerase transcribes the gene of insulin? （ ）
- All the RNAs below are transcribed by RNA pol I except （ ）
- Which of the following steps occurs first in prokayotic transcription?（ ）
- The Rho protein is involved in the _____ stage of transcription. （ ）
- In prokaryotes, RNA polymerase can bind upstream sequences of promoters directly. Eukaryotes need some proteins to facilitate the binding. What are the names of these proteins? （ ）
- Which transcription factor can recognize and bind to TATA box? （ ）
- A mutation to this sequence in eukaryotic mRNA will affect the process by which the 3'-end poly-A tail is added to the mRNA.（ ）
- The functions of 5’ Cap of eukaryotic mRNA include（ ）
- Cis-acting elements and trans-acting factors control transcription. The cis-acting elements include the TATA box, enhancers and other elements et al.（ ）
- RNA Pol II is the enzyme synthesizing hnRNA in eukaryotes. It is not susceptible to amanitin.（ ）
- Eukaryotic transcriptions is accompanied by translation.（ ）
A:α B:β’ C:β D:σ
答案:σ
A:RNA polymerase III B:RNA polymerase IV C:RNA polymerase II D:RNA polymerase I
A:5.8S rRNA B:23S rRNA C:28S rRNA D:18S rRNA
A:promoter clearance B:formation of an open promoter complex C:formation of a closed promoter complex D:Rho protein binding
A:post-transcriptional processing B:termination C:initiation D:elongation
A:Transcription factors B:Introns C:TATA box proteins D:Exons
A:TFII D B:TFII B C:TFII E D:TFII H
A:CAAT B:AAUAAA C:TATAAA D:TTGACA
A:transport of the mRNA from nucleus to cytosol; B:acceleration of the adding of poly A tail. C:protection of the mRNA from degradation; D:enhancement of the mRNA’s translatability;
A:错 B:对
A:错 B:对
A:错 B:对
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