BIOMOLECULES AND ENZYMES

Detailed explanation-1: -A catalyst is a substance that speeds up a chemical reaction, or lowers the temperature or pressure needed to start one, without itself being consumed during the reaction. Catalysis is the process of adding a catalyst to facilitate a reaction.

Detailed explanation-2: -A catalyst increases the rate of reaction by lowering the activation energy. A catalyst increases the rate of reaction in both forward and backward directions by providing an alternate pathway with lower activation energy. If the activation energy is reduced, more reactants can cross the energy barrier easily.

Detailed explanation-3: -Another important idea about catalysts is that they are selective. That is the catalyst doesn’t just speed up all reactions, but only a very particular reaction. This is the key to many chemical transformations.