LIFE SCIENCE

Detailed explanation-1: -Second, they increase reaction rates without altering the chemical equilibrium between reactants and products. Note that the enzyme (E) is not altered by the reaction, so the chemical equilibrium remains unchanged, determined solely by the thermodynamic properties of S and P.

Detailed explanation-2: -Like all catalysts, enzymes take part in the reaction-that is how they provide an alternative reaction pathway. But they do not undergo permanent changes and so remain unchanged at the end of the reaction.

Detailed explanation-3: -When the enzyme has done its job, it releases the molecules from its active site, which are now called the products. In chemical reactions, enzymes are not used up. This means that they can continue catalyzing reactions and producing products, even after several reactions have occurred.

Detailed explanation-4: -Enzymes are regenerated during a chemical reaction, not used up or changed as the reactants are. Enzymes are catalysts, meaning they speed up chemical reactions without being used up in the chemical reaction themselves.