PLEASE HELP ASAP Use the diagram representing the typical steps in gene expression and protein formation to respond:

All of the following help the cell regulate gene expression during Step 2 of protein formation except

general factors that are required for the RNA polymerase to bind to the promoter
repressors binding to the operator preventing the RNA polymerase from progressing
specialty factors binding to the RNA polymerase, altering its specificity
tRNA that binds to the RNA polymerase in the presence of complementary mRNA

the answer would be 3

true is the final answer!

there is no

explanation:

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."