Answer:
Explanation:
The maltose operon will be only efficiently transcribed if two things happen simultaneously: if there is a certain concentration of maltose in the medium, and if glucose is not present. If glucose is present, the microorganism will use it first since is more accessible than maltose, and easily metabolized.
The maltose operon is activated by induction. The promotor in this operon has a sequence that does not match exactly the consensus sequence. Therefore, even with the correct sigma factor, the RNA polymerase does not easily recognize this promotor. The function of the activator protein is to help the RNA polymerase recognize the promotor and start the transcription.
