LIFE SCIENCE

Detailed explanation-1: -Enzymes in our bodies are catalysts that speed up reactions by helping to lower the activation energy needed to start a reaction. Each enzyme molecule has a special place called the active site where another molecule, called the substrate, fits.

Detailed explanation-2: -It speeds up a reaction by lowering or reducing the activation energy of the reaction. It can increase the rates of both forward and backward reactions. However, it itself does not take part in the reaction. The process by which it increases the rate of a reaction by lowering its activation energy is called catalysis.

Detailed explanation-3: –Enzyme brings the substrate to the correct orientation after attaching with that and due to this entropy of the reaction also reduces which also helps for lowering the activation energy. Due to the above given points enzymes lower the activation energy.