Which of the following statement about the promoter in prokaryotes is correct:()
A. The sequences which DNApolymerase can recognize and bind to.
B. The sequences which core enzyme of RNA polymerase can recognize and bind to.
C. The sequences that contains TATA box.
D. The sequences which is a 40-60bp RNA fragment.
E. Its -10 region has a consensus sequence of 5'-TATAAT-3’.
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Which is the substrate of RNA synthesis during transcription process?()
A. dATP
B. NTP
C. dNTP
D. AMP
E. TTP
Which of the following descriptions about DNA and RNA polymerase are correct:()
A. RNA polymerase synthesize RNA chain using nucleoside diphosphate instead of nucleoside triphosphates.
B. RNA polymerase can initiate transcription without a primer, and nucleotides are added to 5’ end of the growing RNA chain.
C. RNA polymerase can add nucleotides in both 3’ or 5’ end of RNA chain.
D. BothRNA polymerase and DNA polymerase can only add nucleotides to 3’ end of the polynucleotides.
Therecognition sequence of RNA polymerase in prokaryotic cell is usually located in:()
A. -35,-10 region upstream transcription start site.
B. -35,-10 region downstream transcription start site.
C. TATA box upstream transcription start site.
D. no specific region.
RecA protein can bind to both single-strand DNA and double-strand DNA, to promote the autosynapsis between them.()
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