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Transcription and Regulation

Transcription and Regulation
The nucleons of eukaryotic cell has

RNA polymerase II
all of these
RNA polymerase I
RNA polymerase III

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

start codons
promoters
enhancers
transcription factors

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Transcription and Regulation
RNA polymerase in prokaryotes has a removable

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

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

Shine Dalgarno region
TATA box
CATT
SV40 region

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Transcription and Regulation
The RNA polymerases that transcribe bacterial DNA are

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

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Transcription and Regulation
The closed complex at bacterial promoters is

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

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