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

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

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

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

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