Transcription 1: General Principles-n week 3
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Questions and Answers

Sigma factor is needed during which stage(s) of transcription? A. Initiation

  • intiation (correct)
  • elongation
  • termination
  • . All of the above

RNA polymerase is able to open the DNA double helix as it moves down the template. What type of enzymatic activity does this mean RNA polymerase must possess?

  • polymerase activity
  • exonuclease activity
  • helicase activity (correct)
  • primase activity

Which of the following statements about the segment of DNA below is TRUE?

  • There are two possible transcripts that are both transcribed on the same strand.
  • There are two possible transcripts that are transcribed on opposite strands of the helix (correct)
  • There are two possible transcripts that both occur in the same reading frame
  • There are two possible transcripts that will result in identical proteins

Within a promoter, a transcriptional start site is

<p>transcription start site located +1 where first base is used as template for transcription (D)</p> Signup and view all the answers

Which of the following occurs first in bacterial transcription?

<p>formation of holoenzyme (B)</p> Signup and view all the answers

Which of the following base sequences is used in transcription?

<p>Promoter and terminator (A)</p> Signup and view all the answers

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