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Transcription Termination in Prokaryotes quiz

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  • What are the two main mechanisms of transcription termination in prokaryotes?
    Transcription termination in prokaryotes occurs via factor dependent termination and rho dependent termination.
  • What structural feature forms in mRNA during factor dependent termination?
    A stem loop structure forms in the mRNA during factor dependent termination.
  • How does the stem loop structure in mRNA affect RNA polymerase during factor dependent termination?
    The stem loop structure causes RNA polymerase to dissociate from the DNA, ending transcription.
  • What is the role of the rho protein in rho dependent termination?
    The rho protein binds to a specific site on the mRNA and initiates the dissociation of RNA polymerase.
  • Where does the rho protein bind during rho dependent termination?
    The rho protein binds to a rho site on the messenger RNA.
  • What is the outcome of RNA polymerase dissociation in both termination mechanisms?
    RNA polymerase dissociation results in the release of the completed mRNA and termination of transcription.
  • What causes the termination of transcription in factor dependent termination?
    The formation of a stem loop structure in the mRNA causes termination by making RNA polymerase dissociate.
  • What is the Greek letter used to symbolize the rho protein?
    The Greek letter 'ρ' (rho) is used to symbolize the rho protein.
  • What happens to the mRNA after transcription termination in prokaryotes?
    The mRNA is released and transcription is complete after termination.
  • How does the mRNA interact with itself to form a stem loop structure?
    The mRNA hydrogen bonds with itself to create a loop within its structure.
  • What is the key difference between factor dependent and rho dependent termination?
    Factor dependent termination relies on mRNA structure, while rho dependent termination relies on the rho protein.
  • What visual aids are used to illustrate transcription termination mechanisms?
    Visual aids focus on the key components and steps of both factor dependent and rho dependent termination.
  • What is released from the DNA during transcription termination?
    RNA polymerase and the newly synthesized mRNA are released from the DNA.
  • What initiates the process leading to RNA polymerase dissociation in rho dependent termination?
    The binding of the rho protein to the rho site on mRNA initiates the process.
  • What is the final signal that transcription has ended in prokaryotes?
    The dissociation of RNA polymerase and release of mRNA signals the end of transcription.