Transcription and Regulation
Which of the following conditions would cause the release of the lac repressor protein from the lac operator site on DNA?

Presence of IPTG (isopropyl thiogalactoside) in the growth media
Presence of glucose in the growth media
Both (b) and (c)
Presence of lactose in the growth media

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Transcription and Regulation
The transcriptional regulatory proteins in eukaryotes which induce transcription usually have

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

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

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