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

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Transcription and Regulation
The transcriptional regulatory proteins in eukaryotes which induce transcription usually have

at least one distinct domains of protein structure, a DNA binding domain and an activation domain
at least two distinct domains of protein structure and a DNA binding domain
none of these
at least two distinct domains of protein structure, a DNA binding domain and an activation domain

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

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