If you wanted to watch a cell swim in a drop of pond water, which microscope would be best to use? a.) scanning electron microscope (sem) b.) compound light microscope c.) transmission electron microscope (tem) d.) scanning probe microscope

The correct answer is - B. Identification and binding of RNAP onto the promoter sequence.

Explanation:

Bacterial RNA polymerases have subunits known as Sigma factors responsible for the identification and specificity of promoter binding of RNAP and regulate the efficiency of RNA synthesis during transcription is initiated.

These bacteria producing the nonfunctional subunits of RNA polymerase or sigma factor will be unable to identify and tightly bind to promoter elements that are RNAP.