Transcription and Regulation
Rho-dependent termination of transcription in E. coli

requires ATP
requires about 50 nucleotides of uncomplexed mRNA
both (a) and (b)
removes mRNA and holoenzyme from the DNA

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

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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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