Transcription and Regulation
Transcription by E. coli polymerase occurs in

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

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

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

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

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

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