Reactants bind to the enzyme at the

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

this protocol provides a detailed procedure for chromatin immunoprecipitation (chip) to study the dna-protein interactions.

d.

explanation: