Transcription and Regulation
Most transcripts of protein coding genes are cleaved

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

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

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Transcription and Regulation
The major function of RNA polymerase's sigma factor is

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

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