Question

a catalyst does not change​

Answer 1

equilibrium

A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism. Enzymes are proteins that act as catalysts in biochemical reactions.

When plant material, such as grass, enters a cow's stomach, microorganisms immediately get to work to break it down. They do this with enzymes. Ruminants are unable to synthesise the enzymes needed to digest cellulose and other plant compounds.

Answer 2

it enhances the reaction but does not involve in the reaction