Are enzymes consumed during a chemical reaction?
Enzymes are biological catalysts. Catalysts are not consumed in a chemical reaction, they just speed up the rate of the chemical reaction without being used up. Well, technically, they give an alternative pathway for a reaction to happen and are used up at some point, but then a second chemical reaction with the alternative pathway creates the catalyst molecule again, and so we therefore say that the catalyst is not used up again.
For example, let the catalyst be
But what is really happening is:
I got this from: