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Gene Structure and Transcription Process
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Gene Structure and Transcription Process

Created by
@JudiciousIndianArt

Questions and Answers

What is the primary function of a promoter in gene structure?

  • To inhibit transcription by binding transcription factors
  • To initiate the transcription of a gene (correct)
  • To enhance the stability of mRNA molecules
  • To serve as a binding site for ribosomes during translation

    • Which of the following statements most accurately describes the role of enhancers in gene expression?

  • Enhancers are responsible for the removal of introns from pre-mRNA
  • Enhancers are segments of RNA that produce coding sequences
  • Enhancers directly bind to RNA polymerase to increase transcription speed
  • Enhancers can significantly increase transcription levels from a distance (correct)

    • What is the consequence of DNA methylation in mammalian cells?

  • Facilitating the recruitment of ribosomes directly to mRNA
  • Blocking the binding of transcription factors and silencing gene expression (correct)
  • Increased transcriptional activation of all genes
  • Enhancing the splicing of introns from pre-mRNA

    • During the process of heterogenous RNA processing to form mRNA, which of the following steps is crucial?

    <p>The addition of a 5' cap and a poly-A tail</p> Signup and view all the answers

    Which of the following statements is true regarding transcription inhibitors?

    <p>They can target specific RNA polymerases to halt RNA synthesis</p> Signup and view all the answers

    What is a key characteristic of exons in gene structure?

    <p>They are the coding regions of a gene.</p> Signup and view all the answers

    During which step of transcription does RNA polymerase bind to the promoter?

    <p>Initiation</p> Signup and view all the answers

    Which of the following is NOT a mechanism of gene expression regulation?

    <p>DNA replication</p> Signup and view all the answers

    What is the role of transcription inhibitors in gene expression?

    <p>They block the synthesis of RNA from DNA.</p> Signup and view all the answers

    What process occurs to heterogenous RNA before it becomes mature mRNA?

    <p>Introns are spliced out and exons are joined.</p> Signup and view all the answers

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