BIOMOLECULES AND ENZYMES

Detailed explanation-1: -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.

Detailed explanation-2: -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-3: -A catalyst is a substance that causes a chemical reaction to happen in a different way than it would happen without that catalyst-for example, a catalyst could cause a reaction to happen at a faster rate, or at a lower temperature, than would be possible without the catalyst.

Detailed explanation-4: -Examples 1: Preparation of Ammonia by Haber’s process. Example 2: Manufacture of sulphuric acid by Contact process. In this process, the oxidation of sulphur dioxide is a major step. In this oxidation, sulphur dioxide is a gas and oxygen is a gas while vanadium pentoxide is a solid catalyst.