The core enzyme of RNA polymerase in prokaryotic cell consists of:()
A. αββ′
B. ααββ′
C. αββ′ω
D. ααββ′ω
E. ααββ′σ
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Which of the following statement about DNA replication and transcription is NOT correct:()
A. Both of them use DNA as template.
B. The product of DNA replication is double-strand DNA, while the product of transcription is single-stand RNA.
C. Both of them are based on the complementary base pairing of A-T and G-C.
D. The products are polynucleotides.
E. In one cell cycle, DNA replication occurs only once, while transcription can occur many times.
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’.
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.
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