Podcast
Questions and Answers
What is the role of the σ subunit in RNA transcription?
What is the role of the σ subunit in RNA transcription?
- To unwind DNA and form a transcription bubble
- To recognize the terminator sequence
- To elongate the newly synthesized RNA strand
- To recognize the promoter region to initiate RNA synthesis (correct)
What occurs at the +1 site during RNA transcription?
What occurs at the +1 site during RNA transcription?
- The RNA polymerase holoenzyme binds nonspecifically to DNA
- The transcription bubble is formed and the σ subunit leaves (correct)
- The σ subunit recognizes the promoter region
- The RNA polymerase core enzyme elongates the RNA strand
What is the function of TFIIH in the transcription process?
What is the function of TFIIH in the transcription process?
- It initiates the transcription process
- It phosphorylates the CTD of RNA polymerase II (correct)
- It enhances the rate of transcription
- It binds to the TBP
What is the function of the core enzyme in RNA transcription?
What is the function of the core enzyme in RNA transcription?
What is the purpose of the 5' cap in mRNA processing?
What is the purpose of the 5' cap in mRNA processing?
What type of terminator sequence is characterized by a hairpin loop followed by a sequence of U's?
What type of terminator sequence is characterized by a hairpin loop followed by a sequence of U's?
What is the role of ρ in terminator sequences?
What is the role of ρ in terminator sequences?
What is the consensus sequence for polyadenylation?
What is the consensus sequence for polyadenylation?
What is the function of the spliceosome in mRNA processing?
What is the function of the spliceosome in mRNA processing?
What is the composition of the RNA polymerase holoenzyme?
What is the composition of the RNA polymerase holoenzyme?
What is the purpose of the 2' OH group in the branch site of the intron?
What is the purpose of the 2' OH group in the branch site of the intron?
What is the result of the coupling of transcription and post-transcription?
What is the result of the coupling of transcription and post-transcription?
What is the function of the σ subunit of holoenzyme during RNA transcription?
What is the function of the σ subunit of holoenzyme during RNA transcription?
What is the difference between the coding strand and the template strand of DNA?
What is the difference between the coding strand and the template strand of DNA?
What is the function of tRNA during protein synthesis?
What is the function of tRNA during protein synthesis?
What is the direction of transcription during RNA synthesis?
What is the direction of transcription during RNA synthesis?
What is the function of the Pribnow box and –35 region during RNA transcription?
What is the function of the Pribnow box and –35 region during RNA transcription?
What is the difference between rho-dependent and rho-independent termination?
What is the difference between rho-dependent and rho-independent termination?
