Transcription and Regulation
The binding of lac repressor to DNA could be considered to be analogous to

competitive inhibition of an enzyme
mixed-type inhibition of an enzyme
uncompetitive inhibition of an enzyme
allosteric effects in enzyme regulation

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Transcription and Regulation
Most transcripts of protein coding genes are cleaved

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

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Transcription and Regulation
What is a promoter?

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

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