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Transcription and Regulation

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

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

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Transcription and Regulation
Transcription by E. coli polymerase occurs in

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

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Transcription and Regulation
The regions of a gene located at -10 and -35, with respect to the start of transcription, are termed

promoters.
Shine Dalgarno sequences.
oriC regions.
start codons.

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

a translation bubble
transcription bubble
none of these
replication bubble

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Transcription and Regulation
Transcription factors are

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

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