The Sigma-70 Subunit

Multiple Choice

The sigma-70 subunit

A) increases the affinity of the core polymerase for nonpromoter sequences.
B) decreases the affinity of the core polymerase for specific promoter sequences.
C) is responsible for transcribing many genes.
D) is associated with a holoenzyme,enabling the formation of more stable complexes.
E) All of the above.