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

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

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Transcription and Regulation
Most transcripts of protein coding genes are cleaved

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

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

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