In E.coli, once transcription is initiated, ____________________________________
ID: 149570 • Letter: I
Question
In E.coli, once transcription is initiated, _______________________________________"
the beta subunit of the RNA-Polymerase detaches from the core polymerase
the sigma subunit dissociates from the core RNA-Polymerase
the DNA unwinds to allow the RNA-Polymerase access to the template
the omega subunit falls off from the core RNA-Polymerase
the Rho protein associates to RNA-Polymerase therefore increasing its processivity
f) the beta subunit of the RNA-Polymerase detaches from the core polymerase
a)the beta subunit of the RNA-Polymerase detaches from the core polymerase
b)the sigma subunit dissociates from the core RNA-Polymerase
c)the DNA unwinds to allow the RNA-Polymerase access to the template
d)the omega subunit falls off from the core RNA-Polymerase
e)the Rho protein associates to RNA-Polymerase therefore increasing its processivity
f) the beta subunit of the RNA-Polymerase detaches from the core polymerase
Explanation / Answer
Option b is correct. Rna polymerase consist on 5 subunits out of which 4 makes the the core polymerase and 5th one is sigma factor required for only the transcription initiation.