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Steps of Transcription quiz #2 Flashcards

Steps of Transcription quiz #2
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  • Which occurs during transcription?
    Transcription involves three key steps: initiation, elongation, and termination. During initiation, RNA polymerase binds to the promoter region of DNA. In elongation, RNA polymerase synthesizes RNA by pairing free RNA nucleotides with the DNA template. Termination occurs when RNA polymerase reaches a terminator sequence, releasing the RNA molecule.
  • Which of the following best describes the product of DNA transcription?
    The product of DNA transcription is an RNA molecule. In eukaryotes, this RNA is a premature mRNA that undergoes further processing before translation, while in prokaryotes, the RNA is ready for translation immediately.
  • What is the product of transcription?
    The product of transcription is an RNA molecule, which can be mRNA, tRNA, or rRNA, depending on the gene being transcribed.
  • Which step in transcription occurs first?
    The first step in transcription is initiation, where RNA polymerase binds to the promoter region of DNA.
  • In which direction does RNA polymerase move along the DNA?
    RNA polymerase moves along the DNA in the 5' to 3' direction during transcription.
  • In which phase of transcription does the RNA polymerase attach to the promoter sequence of DNA?
    RNA polymerase attaches to the promoter sequence of DNA during the initiation phase of transcription.
  • What is the proper order of the following events in the expression of a eukaryotic gene: transcription initiation, RNA processing, translation?
    The proper order is transcription initiation, RNA processing, and then translation.
  • What marks the transition to the elongation stage of transcription in bacteria?
    The transition to the elongation stage of transcription in bacteria is marked by RNA polymerase moving away from the promoter and beginning RNA synthesis.
  • What happens to the DNA molecule after transcription?
    After transcription, the DNA molecule remains unchanged and can be used for subsequent rounds of transcription.
  • During which stage of transcription does RNA polymerase bind to the promoter?
    RNA polymerase binds to the promoter during the initiation stage of transcription.
  • What is the first step of protein synthesis?
    The first step of protein synthesis is transcription, where the DNA sequence of a gene is transcribed into RNA.
  • Which enzyme synthesizes RNA during transcription?
    RNA polymerase is the enzyme that synthesizes RNA during transcription.
  • Which step occurs when RNA polymerase attaches to the promoter DNA?
    The step that occurs when RNA polymerase attaches to the promoter DNA is initiation.
  • Which of the following events occur during the initiation stage of transcription? A) RNA polymerase binds to the promoter B) RNA polymerase synthesizes RNA C) RNA polymerase reaches a terminator sequence
    A) RNA polymerase binds to the promoter
  • What are the steps of transcription?
    The steps of transcription are initiation, elongation, and termination.