AP BIOLOGY

Detailed explanation-1: -RNA polymerase is able to bind the-40 to-60 region of the ada and the aidB promoters in the absence of meAda, and its binding is mediated by the alpha subunit. This region resembles the UP element of the rrnB P1 promoter in location, sequence and mechanism of interaction with RNA polymerase.

Detailed explanation-2: -During transcription, RNA polymerase binds to the promoter site on the DNA.

Detailed explanation-3: -Promoters contain specific DNA sequences such as response elements that provide a secure initial binding site for RNA polymerase and for proteins called transcription factors that recruit RNA polymerase.

Detailed explanation-4: -A TATA box is a DNA sequence that indicates where a genetic sequence can be read and decoded. It is a type of promoter sequence, which specifies to other molecules where transcription begins.