Transcription regulation

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1. When lactose is added to the cell's surroundings, the lac repressor is inactivated and ___________

  • Transcription of the lac enzymes can go ahead
  • Transcription of the lac enzymes is silenced
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2. Mechanisms of regulation usually fall into ___ broad categories

  • 2
  • 5

3. Tryptophan + trp repressor = binding to operator =

  • No transcription
  • Transcription

4. In ___________ the default is 'on', an aporepressor binds with it's co repressor and can then bind to the DNA and stop transcription

  • Repressible transcription
  • Inducible transcripiton

5. In _________ the default is 'off' by the binding of a repressor, until an inducer comes along and removes the repressor from the DNA and transcription can occur

  • Inducible
  • Repressible
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