Transcription and Regulation
Transcription by E. coli polymerase occurs in

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

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Transcription and Regulation
What is a promoter?

A specific sequence of DNA to which RNA polymerase binds
None of these
A specific DNA sequence to which a restriction endonuclease binds
A specific sequence of DNA to which a catabolic repressor binds

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

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

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Transcription and Regulation
Most transcripts of protein coding genes are cleaved

at the 3' end just after a poly adenylation signal
at the 5' end immediately before a poly adenylation signal
at the 5' end immediately after a poly adenylation signal
at the 3' end just before a poly adenylation signal

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