A) binding of RNA polymerase holoenzyme at the promoter sites. B) chain elongation. C) DNase I activity on RNA polymerase/DNA complex. D) initiation of polymerization. E) chain termination.
Operons are a(n) ____ sequence lying adjacent to the DNA being transcribed and are composed of a promoter located next to a(n) ____ that interacts and is controlled by a(n) ____ protein.
A) initiation; operator; repression B) operator; repressor; regulatory C) regulatory; repressor; activator D) regulatory; operator; regulatory E) none are true
The stand of dsDNA that is read by RNA polymerase is termed the ____ strand with RNA polymerase moving ____ along it. The polymerase forms a ____, growing in the ____ direction.
A) template; 5'→3'; transcript; 3'→5' B) template; 3'→5'; transcript; 5'→3' C) transcript; 3'→5'; template; 5'→3' D) nontemplate; 5'→3'; template; 3'→5' E) nontemplate; 3'→5'; template; 5'→3'