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Transcription and Regulation

Transcription and Regulation
In both eukaryotes and prokaryotes, a promoter region that is rich in AT bases is called as

SV40 region
CATT
TATA box
Shine Dalgarno region

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Transcription and Regulation
Transcription by E. coli polymerase occurs in

None of these
four phases known as initiation, propagation, elongation and termination
three phases known as initiation, elongation and termination
two phases known as initiation and termination

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Transcription and Regulation
Transcription factors are

promoters
TATA boxes
CATT boxes
proteins which bind to DNA and regulate transcription

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Transcription and Regulation
In eukaryotes, there are three different RNA polymerases. The RNA polymerase responsible for transcription of mRNA is

RNA polymerase III
RNA polymerase II
RNA polymerase I
none of these

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Transcription and Regulation
Each tRNA molecule has a cloverleaf secondary structure consisting of

two stem loops
three stem loops
either (a) or (b)
four stem loops

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Transcription and Regulation
Transcription of each set of rRNA genes by RNA polymerasel produces

a single 45S rRNA precursor molecule
a single 28S rRNA precursor molecule
a single 18S rRNA precursor molecule
a single 5S rRNA precursor molecule

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