题目内容

Which of the following is true for the process of RNA synthesis?

A. Occurs in the 3′ to 5′ direction
B. Requires primer
C. Does not require primer
D. Is initiated at special DNA sequences known as start condons

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Eukaryotic promoters contain:

A. TATA box 25 bp upstream of transcription start site
B. CAAT box 70 to 80 bp upstream of transcription start site
C. Both (a) and (b)
D. None of these

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A consensus sequence on DNA, called TATA box, is the site for attachment of:

A. RNA-dependent DNA polymerase
B. DNA-dependent RNA polymerase
C. DNA-dependent DNA polymerase
DNA topoisomerase II

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Sigma and Rho factors are required for:

A. Replication
B. Transcription
C. Translation
D. Polymerization

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Noncoding sequences in a gene are known as:

A. Cistron
B. Nonsense codons
C. Introns
D. Exons

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Which of the following is true for the process of RNA synthesis?

A. Occurs in the 3′ to 5′ direction B. Requires primer C. Does not require primer D. Is initiated at special DNA sequences known as start condons

Eukaryotic promoters contain:

A consensus sequence on DNA, called TATA box, is the site for attachment of:

Sigma and Rho factors are required for:

Noncoding sequences in a gene are known as:

A. Occurs in the 3′ to 5′ direction
B. Requires primer
C. Does not require primer
D. Is initiated at special DNA sequences known as start condons