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Transcription and Regulation

Transcription and Regulation
Upstream regions which are essential for correct transcription are called

transcription factors
enhancers
promoters
start codons

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Transcription and Regulation
Immediately after transcription

both (a) and (b)
a methylated guanine cap is added to the 51 end of the transcript
a methylated guanine cap is added to the 31 end of the transcript
a poly adenylation signal is added

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Transcription and Regulation
RNA polymerase in prokaryotes has a removable

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

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Transcription and Regulation
The RNA polymerases that transcribe bacterial DNA are

multisubunit enzymes
interchangable with DNA polymerases
only active inside the cell
highly glycosylated in their active forms

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

TATA box
CATT
SV40 region
Shine Dalgarno region

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

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

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