Transcription and Regulation
In eukaryotes, there are three different RNA polymerases. The RNA polymerase responsible for transcription of mRNA is

RNA polymerase II
RNA polymerase III
none of these
RNA polymerase I

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Transcription and Regulation
What is a promoter?

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

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Transcription and Regulation
Which of the following conditions would cause the release of the lac repressor protein from the lac operator site on DNA?

Both (b) and (c)
Presence of glucose in the growth media
Presence of IPTG (isopropyl thiogalactoside) in the growth media
Presence of lactose in the growth media

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