How does an Enzyme do its Role? Why does it do it like that?

-Enzymes, are Stupid Specific. They literally will at most have 1 Substrate they can Work With -Enzymes have an Active Site - the Part where the Substrate joins on to in order to Speed the Reaction up -And so if the Substrate does fit in the Active Site, then it will be Catalysed - if not then Nothing will Happen.