LIFE SCIENCE

Detailed explanation-1: -Definition. An enzyme is a biological catalyst and is almost always a protein. It speeds up the rate of a specific chemical reaction in the cell. The enzyme is not destroyed during the reaction and is used over and over.

Detailed explanation-2: -The Catalytic Activity of Enzymes First, they increase the rate of chemical reactions without themselves being consumed or permanently altered by the reaction. Second, they increase reaction rates without altering the chemical equilibrium between reactants and products.

Detailed explanation-3: -Biological catalysts are called enzymes. There is, for instance, an enzyme in our saliva which converts starch to a simple sugar, which is used by the cell to produce energy, and another enzyme which degrades the excess lactic acid produced when we overexert ourselves.

Detailed explanation-4: -Biocatalysis is defined as the use of natural substances that include enzymes from biological sources or whole cells to speed up chemical reactions. Enzymes have pivotal role in the catalysis of hundreds of reactions that include production of alcohols from fermentation and cheese by breakdown of milk proteins.

Detailed explanation-5: -Answer and Explanation: Enzymes act as catalysts in aqueous solutions. An aqueous solution is a water based mixture which contains various dissolved molecules. The properties of an aqueous solution determine how effective an enzyme is as a biological catalyst.