8 Questions
How do sigma factors promote transcription initiation?
Sigma factors bind the promoter at specific sites near the start of transcription initiation and promote binding of RNA polymerase to the promoter.
What are sigma factors?
Sigma factors are protein factors in prokaryotes that start transcription.
What role do sigma factors play in termination of transcription?
Sigma factors bind the RNA polymerase after it has dissociated from the DNA to promote termination of transcription.
What is the similarity between sigma factors and transcription factors in eukaryotes?
Both sigma factors and transcription factors in eukaryotes are involved in starting transcription.
What are the three stages of transcription?
The three stages of transcription are initiation, elongation, and termination.
What is the role of RNA polymerase in transcription?
RNA polymerase is responsible for carrying out the transcription reaction.
Which nucleotides are incorporated into the RNA strand during transcription?
The nucleotides incorporated into the RNA strand are A, C, G, and U.
How many types of RNA polymerase are there in eukaryotes?
There are three types of RNA polymerase in eukaryotes.
Test your knowledge on prokaryotic transcription initiation and the role of sigma factors in starting transcription. Explore the specific sequences recognized by sigma factors and their importance in gene regulation.
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