LIFE SCIENCE

Detailed explanation-1: -Enzymes (and other catalysts) act by reducing the activation energy, thereby increasing the rate of reaction. The increased rate is the same in both the forward and reverse directions, since both must pass through the same transition state.

Detailed explanation-2: -Enzymes bind to a substrate to speed up a chemical reaction. The substrate binds at a region of the enzyme called the active site. The enzyme allows the reactants to interact with each other and make products more efficiently.

Detailed explanation-3: -Enzymes are biological catalysts (also known as biocatalysts) that speed up biochemical reactions in living organisms, and which can be extracted from cells and then used to catalyse a wide range of commercially important processes.

Detailed explanation-4: -Enzymes are proteins that catalyze a chemical reaction in our body. They function as a catalyst that speeds up the reaction by lowering the activation energy. The enzyme accelerates a chemical reaction without changing its equilibrium, so it is called as a biocatalyst.

Detailed explanation-5: -Although enzymes speed up reactions, they cannot by themselves force energetically unfavorable reactions to occur.