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Transcription and Regulation

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

replication bubble
transcription bubble
none of these
a translation bubble

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

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

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Transcription and Regulation
The closed complex at bacterial promoters is

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

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

CATT
Shine Dalgarno region
TATA box
SV40 region

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Transcription and Regulation
RNA polymerase in prokaryotes has a removable

alpha subunit
beta subunit
sigma subunit
both (a) and (b)

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Transcription and Regulation
Transcription factors are

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

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