Transcription and Regulation
Transcription by E. coli polymerase occurs in

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

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Transcription and Regulation
The function of the sigma factor of RNA polymerase is to

assure that translation ends at the proper point
assure that translation begins at the proper point
assure that transcription ends at the proper point
assure that transcription begins at the proper point

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Transcription and Regulation
Multiple copies of 5S genes, located at a chromosomal site distinct from the other rRNA genes

are transcribed by rRNA polymerase I and the 5S rRNA
are transcribed by DNA polymerase I
are transcribed by rRNA polymerase II
are transcribed by rRNA polymerase III and the 5S rRNA

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