For the first installment: chicken breasts, arguably one of the most difficult of the standard meats to grill. It's all too common of an occurrence to get dry, chewy, cardboardy breasts. This is all correctable though, and chicken breasts can be fantastic on the grill, it just takes a little know-how.
In prokaryotic cells, this involves the induction, repression, or enhancement of enzyme synthesis by regulatory proteins (def) that can bind to DNA and either induce, block, or enhance the function of RNA polymerase (def), the enzyme required for transcription.
1 In negative inducible operons, a regulatory repressor protein is normally bound to the operator, which prevents the transcription of the genes on the operon. 2  If an inducer molecule is present, it binds to the repressor and changes its conformation so that it is unable to bind to the operator. Operator â a segment of DNA that a repressor binds to. 2  It is classically defined in the lac operon as a segment between the promoter and the genes of the operon. 3  In the case of a repressor, the repressor protein physically obstructs the RNA polymerase from transcribing the genes.