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
The transcriptional regulatory proteins in eukaryotes which induce transcription usually have

at least one distinct domains of protein structure, a DNA binding domain and an activation domain
at least two distinct domains of protein structure, a DNA binding domain and an activation domain
none of these
at least two distinct domains of protein structure and a DNA binding domain

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Transcription and Regulation
Multiple copies of 5S genes, located at a chromosomal site distinct from the other rRNA genes

are transcribed by DNA polymerase I
are transcribed by rRNA polymerase III and the 5S rRNA
are transcribed by rRNA polymerase II
are transcribed by rRNA polymerase I and the 5S rRNA

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