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

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

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Transcription and Regulation
What is a promoter?

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

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