Transcription and Regulation
What is a promoter?

A specific sequence of DNA to which a catabolic repressor binds
A specific DNA sequence to which a restriction endonuclease binds
None of these
A specific sequence of DNA to which RNA polymerase 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 ends at the proper point
assure that translation begins at the proper point
assure that transcription ends at the proper point

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