The function of the aminoacyl -tRNA synthetase including:()
A. To proceed transpeptidation
B. To assist tRNA into the ribosome A site
C. To promote tRNA binding to SD sequence
D. To transcribe the genes encoding tRNA
E. To connect a specific amino acid to its corresponding tRNA
查看答案
Which of the following biological process needs RBS sequence:()
A. Splicing of mRNA in eukaryotic cells.
B. Transcription of DNA in prokaryotic cells.
C. The recognition of start codon by eukaryotic ribosome.
D. The location of ribosome in mRNA in prokaryotic cell.
E. The termination of transcription in prokaryotes.
Which of the following is not needed in the elongation process of polypeptide chain:()
A. mRNA (x) 窗体顶端
B. formyl-methionyl-tRNA 窗体底端
C. transpeptidase 窗体底端
D. GTP
EF-Tu and EF-Ts
When translation is not performed by ribosome, both the large subunit and the small subunit of ribosome are free, and it mainly depends on:() ( ) 窗体顶端
A. The small subunit of ribosome could not bind to the large subunit when mRNA is not interacted with the small subunit. 窗体底端
B. The binding of small subunit to translation initiation factor 3(IF-3) prevents the combination of small subunit and larger subunit.
C. The small subunit of ribosome is not connected to the initiator tRNA,which is the bridge that promotes the combination of large subunit and small subunit. 窗体底端
D. Lack of necessary translation initiation factors in the small subunit,thus not able to combine with the large subunit.
During the elongation process of translation, the amino acid carried by aminoacyl-tRNA will be transferred to the end of extended polypeptide chain carried by peptidyl-tRNA with the help of the large subunit of ribosome.() 窗体底端
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