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Transcription and Regulation

Transcription and Regulation
The complex of RNA polymerase, DNA template and new RNA transcript is called

transcription bubble
none of these
replication bubble
a translation bubble

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Transcription and Regulation
In prokaryotes, transcription is

terminated by the stop codon
terminated by a poly A sequence
terminated by a start codon
terminated by a protein called rho

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

SV40 region
Shine Dalgarno region
CATT
TATA box

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

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

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Transcription and Regulation
The closed complex at bacterial promoters is

in equilibrium with free RNA polymerase and the promoter
bound more tightly when repressors are present
not affected by promoter mutations
not affected by activator proteins

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Transcription and Regulation
Enhancers are regions that

are adjacent to the TATA box
are CAT box binding proteins
modulate transcription
bind RNA polymerase

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