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
allosteric effects in enzyme regulation
uncompetitive inhibition of an enzyme

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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 major function of RNA polymerase's sigma factor is

recognition of the transcriptional stop sequence
recognition of the translational stop sequence
recognition of the translational start sequence
recognition of the transcriptional start sequence

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