Podcast
Questions and Answers
What is the main way controlling gene expression is achieved?
What is the main way controlling gene expression is achieved?
- By controlling transcription initiation (correct)
- By controlling translation initiation
- By controlling translation elongation
- By controlling transcription elongation
How do regulatory proteins influence transcription?
How do regulatory proteins influence transcription?
- By blocking or stimulating transcription based on their interaction with RNA polymerase (correct)
- By inhibiting translation
- By activating transcription factors
- By directly editing the DNA sequence
In prokaryotic organisms, what are operons?
In prokaryotic organisms, what are operons?
- Regulatory regions that bind to RNA polymerase
- Sequences of DNA where transcription initiation is controlled positively
- Clusters of genes under the control of a single operator (correct)
- Sequences of DNA encoding regulatory proteins
What is the role of operators in prokaryotic gene regulation?
What is the role of operators in prokaryotic gene regulation?
Where does RNA polymerase bind in relation to the coding region of a gene in prokaryotes?
Where does RNA polymerase bind in relation to the coding region of a gene in prokaryotes?
What does positive control achieve in prokaryotic gene regulation?
What does positive control achieve in prokaryotic gene regulation?
What is the main role of acetylated histones in relation to DNA?
What is the main role of acetylated histones in relation to DNA?
Which process is NOT a part of posttranscriptional regulation?
Which process is NOT a part of posttranscriptional regulation?
What occurs during alternative splicing?
What occurs during alternative splicing?
What is the main outcome of RNA editing?
What is the main outcome of RNA editing?
Which process involves the inhibition of gene expression or translation by neutralizing targeted mRNA molecules?
Which process involves the inhibition of gene expression or translation by neutralizing targeted mRNA molecules?
What is a role of translation repressor proteins in posttranscriptional regulation?
What is a role of translation repressor proteins in posttranscriptional regulation?
How does ATP-dependent remodeling factor contribute to eukaryotic chromosome structure?
How does ATP-dependent remodeling factor contribute to eukaryotic chromosome structure?
What is the main function of miRNA and siRNA in RNA interference?
What is the main function of miRNA and siRNA in RNA interference?
Which RNA molecule is involved in the degradation of miRNA and siRNA?
Which RNA molecule is involved in the degradation of miRNA and siRNA?
What is the primary mechanism through which proteins are degraded when marked with ubiquitin?
What is the primary mechanism through which proteins are degraded when marked with ubiquitin?
Which type of RNA molecule is 22 nucleotides in length and involved in the repression of a gene post-transcription?
Which type of RNA molecule is 22 nucleotides in length and involved in the repression of a gene post-transcription?
Who were the Nobel prize recipients credited with the discovery of the CRISPR genome editing technique?
Who were the Nobel prize recipients credited with the discovery of the CRISPR genome editing technique?
What is required for transcription initiation in eukaryotic gene regulation?
What is required for transcription initiation in eukaryotic gene regulation?
Which type of factors increase transcription in certain cells or in response to signals in eukaryotic gene regulation?
Which type of factors increase transcription in certain cells or in response to signals in eukaryotic gene regulation?
What is the function of coactivators and mediators in the transcription complex?
What is the function of coactivators and mediators in the transcription complex?
Where do general transcription factors bind in the gene during eukaryotic regulation?
Where do general transcription factors bind in the gene during eukaryotic regulation?
What is the association of methylated histone proteins with inactive regions of chromatin?
What is the association of methylated histone proteins with inactive regions of chromatin?
Which DNA sequences cause activation of transcription when specific transcription factors bind to them?
Which DNA sequences cause activation of transcription when specific transcription factors bind to them?
What is the function of the promoter in prokaryotic gene regulation?
What is the function of the promoter in prokaryotic gene regulation?
Which type of regulation is exhibited by the trp operon?
Which type of regulation is exhibited by the trp operon?
What is the role of cAMP in prokaryotic gene regulation?
What is the role of cAMP in prokaryotic gene regulation?
In the lac operon, what happens when lactose is present?
In the lac operon, what happens when lactose is present?
How does glucose affect the lac operon?
How does glucose affect the lac operon?
What is the consequence of low levels of tryptophan in the trp operon?
What is the consequence of low levels of tryptophan in the trp operon?
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