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Introduction to Transcription quiz #3

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  • During protein synthesis, what role does mRNA play?
    mRNA carries the genetic information from DNA to the ribosome for protein synthesis.
  • What does transcription produce?
    It produces RNA
  • What does the enzyme RNA polymerase do during transcription?
    RNA polymerase synthesizes RNA by transcribing a DNA template.
  • How does RNA polymerase know where to start transcribing a gene into mRNA?
    RNA polymerase starts transcribing at the promoter region of the gene.
  • Where does transcription take place in eukaryotic cells?
    Transcription takes place in the nucleus of eukaryotic cells.
  • How many subunits make up the core RNA polymerase of a bacterium?
    The core RNA polymerase of a bacterium typically consists of five subunits.
  • What is a similarity between eukaryotic and bacterial transcriptional regulation?
    Both require transcription factors
  • During the process of transcription, what is synthesized?
    RNA is synthesized during the process of transcription.
  • What is a feature of transcription unique to eukaryotes?
    Requires transcription factors
  • What types of RNA are produced during transcription?
    All of the above
  • Where in the cell does transcription occur?
    Transcription occurs in the nucleus of eukaryotic cells.
  • Why does transcription occur in the nucleus and not in the cytoplasm in eukaryotes?
    Transcription occurs in the nucleus because that is where the DNA is located.
  • What is true about transcription in both bacteria and eukaryotes?
    Both require transcription factors
  • RNA polymerase makes a copy of what during transcription?
    RNA polymerase makes a copy of the DNA template strand into RNA.
  • What enzyme is involved in transcription?
    RNA polymerase is the enzyme involved in transcription.
  • What does transcription produce?
    It produces RNA
  • Which direction is the template DNA read by the RNA polymerase?
    The template DNA is read in the 3' to 5' direction by RNA polymerase.
  • What is the role of transcription in a cell?
    It converts DNA into RNA
  • What occurs during the process of transcription?
    During transcription, RNA is synthesized from a DNA template.
  • In RNA interference, what silences mRNA?
    Small interfering RNAs (siRNAs) or microRNAs (miRNAs) can silence mRNA.
  • What is the point of transcription?
    The point of transcription is to synthesize RNA from a DNA template, which is essential for gene expression.
  • How are the 5' ends of RNA polymers modified in eukaryotes?
    They are capped in eukaryotes
  • What is the process by which an mRNA nucleotide sequence is converted into an amino acid sequence?
    The process is called translation.
  • What are the two mechanisms of transcription termination in E. coli?
    Rho-dependent and rho-independent
  • Which subunit of the E. coli polymerase confers specificity to transcription?
    The sigma (σ) subunit confers specificity to transcription in E. coli.
  • Where in a eukaryotic cell does transcription take place?
    Transcription takes place in the nucleus of a eukaryotic cell.
  • During which stage of transcription does the bacterial RNA polymerase bind to the promoter?
    The bacterial RNA polymerase binds to the promoter during the initiation stage of transcription.
  • What is not a function of transposons?
    They are involved in transcription
  • Which enzyme synthesizes tRNA?
    RNA polymerase III synthesizes tRNA.
  • With the help of RNA, what process occurs?
    With the help of RNA, protein synthesis occurs during translation.
  • What is not a product of transcription in bacteria?
    DNA
  • What is a function of RNA polymerase?
    Synthesizing RNA
  • What is a feature common to both prokaryotic and eukaryotic gene expression?
    Both require transcription factors
  • Where does transcription occur in the cell?
    Transcription occurs in the nucleus of eukaryotic cells.
  • Ribosomes are the site where translation or transcription takes place?
    Ribosomes are the site where translation takes place.
  • What enzyme binds to a DNA promoter region to initiate transcription?
    RNA polymerase binds to a DNA promoter region to initiate transcription.
  • Where is the promoter sequence TATAAT located?
    The TATAAT sequence, also known as the Pribnow box, is located in bacterial promoters.
  • The transcription initiation site of a eukaryotic gene is found at which location?
    The transcription initiation site is found at the promoter region of a eukaryotic gene.
  • Which enzyme is not required for transcription?
    DNA polymerase
  • What occurs during transcription?
    During transcription, RNA is synthesized from a DNA template.