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Questions and Answers
What is the primary function of a promoter in gene structure?
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?
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?
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?
During the process of heterogenous RNA processing to form mRNA, which of the following steps is crucial?
Which of the following statements is true regarding transcription inhibitors?
Which of the following statements is true regarding transcription inhibitors?
What is a key characteristic of exons in gene structure?
What is a key characteristic of exons in gene structure?
During which step of transcription does RNA polymerase bind to the promoter?
During which step of transcription does RNA polymerase bind to the promoter?
Which of the following is NOT a mechanism of gene expression regulation?
Which of the following is NOT a mechanism of gene expression regulation?
What is the role of transcription inhibitors in gene expression?
What is the role of transcription inhibitors in gene expression?
What process occurs to heterogenous RNA before it becomes mature mRNA?
What process occurs to heterogenous RNA before it becomes mature mRNA?
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