Podcast
Questions and Answers
What initiates RNA silencing (or RNA interference)?
What initiates RNA silencing (or RNA interference)?
- Replication of double-stranded RNA viruses
- Transcription of inverted repeats in DNA
- Transcription of two different RNA molecules that are complementary to one another and pair
- Presence of double-stranded RNA (correct)
Which enzyme cleaves double-stranded RNA to produce small interfering RNAs?
Which enzyme cleaves double-stranded RNA to produce small interfering RNAs?
- RNA polymerase
- Ligase
- Helicase
- Dicer (correct)
What is the role of small interfering RNAs (siRNAs) in RNA silencing?
What is the role of small interfering RNAs (siRNAs) in RNA silencing?
- Pair with complementary sequences in DNA
- Guide for the methylation of DNA sequences
- Attract an RNA–protein complex that cleaves mRNA (correct)
- Enhance transcription efficiency
Where do siRNAs serve as guides for methylation?
Where do siRNAs serve as guides for methylation?
Which factor affects the stability of mRNA?
Which factor affects the stability of mRNA?
What is the role of DNA-binding factors in transcription initiation?
What is the role of DNA-binding factors in transcription initiation?
How does RNA polymerase I terminate transcription in eukaryotes?
How does RNA polymerase I terminate transcription in eukaryotes?
Which polymerase does not require a hairpin structure for transcription termination?
Which polymerase does not require a hairpin structure for transcription termination?
What is a common feature of eukaryotic gene regulation that differs from bacterial cells?
What is a common feature of eukaryotic gene regulation that differs from bacterial cells?
How is gene expression influenced by chromatin structure in eukaryotic cells?
How is gene expression influenced by chromatin structure in eukaryotic cells?
What is the role of GAL80 in transcriptional regulation?
What is the role of GAL80 in transcriptional regulation?
How do repressors in eukaryotic cells differ from repressors in bacteria?
How do repressors in eukaryotic cells differ from repressors in bacteria?
What is the function of insulators in gene regulation?
What is the function of insulators in gene regulation?
How does alternative splicing impact gene expression?
How does alternative splicing impact gene expression?
Which protein plays a role in enhancing the production of mRNA encoding the small t antigen?
Which protein plays a role in enhancing the production of mRNA encoding the small t antigen?
How does mRNA stability influence gene expression?
How does mRNA stability influence gene expression?
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