Answer:
Does not contain electrons
Explanation:
Hope this helps!
Answer:
Sigma factors bind to the promoter region of a particular gene and facilitating the binding of RNA Polymerase to the promoter region (formation of the RNA polymerase holoenzyme complex) in order initiate transcription of the gene.
Put simply - Helps RNA Polymerase do it's job.
If you go on mc3.edu/admissions/applying-to-mccc/testing-and-assessment/assets/biology-placement-test.pdf page 11 it will tell you all the answers to your questions....
I'm not sure if i fully understood your question but i'll go ahead and answer it .. The DNA molecule has the promotor region which is detected by the transcription factors that are responsible to start transcription ( and hence , unzipping the dna strands )
