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Standard XII
Biology
Splicing
The transcrip...
Question
The transcription initiation factor associated with the RNA polymerase holoenzyme in prokaryotes is
A
β
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B
ω
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C
σ
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D
α
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Solution
The correct option is
C
σ
The transcription initiation factor associated with the RNA polymerase holoenzyme in prokaryotes is sigma factor.
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Similar questions
Q.
In prokaryotes, holoenzyme RNA polymerase attaches to the DNA sequence at the promoter site of template DNA during transcription. The sequence of that point where the RNA polymerase binds is:
Q.
Read the following statements regarding transcription.
1. RNA polymerase initiates the process of transcription with the help of sigma factor.
2. RNA polymerase also facilitates opening of the DNA double helix in prokaryotes.
3. Transcription requires primer
4. In bacteria, there are three types of RNA polymerases.
How many of the above statements are incorrect?
Q.
Identify the correct sequence of events occurring in eukaryotic transcription,
(A) Binding of RNA polymerase
(B) Phosphorylation of C-terminus domain
(C) Transcription initiation
(D) Binding of transcription factors
Q.
In eukaryotic transcription
(A) RNA polymerase II is responsible for the transcription of hnRNA
(B) The transcription factors recognise the promoter
(C) The core promoter determines the frequency of initiation
(D) Transcription termination by genes transcribed by RNA polymerase I are similar to rho-dependent prokaryotic termination
Choose the correct option
Q.
During transcription, the RNA polymerase holoenzyme binds to a gene promoter and assumes a saddle-like structure. What is its DNA-binding sequence?
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