BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The answer is enzymes. 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: -Enzymes initiate chemical reactions by binding to reactants at the active site and arranging them in a way that helps favor the reaction. Enzymes are three dimensional proteins that have a unique site to bind to reactants called the active site.

Detailed explanation-3: -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-4: -molecules down in the body. All are controlled by a group of proteins called enzymes. Enzymes are biochemical catalysts that alter the rate of reactions. However, unlike most chemical catalysts, enzymes are highly selective and only promote specific reactions.

Detailed explanation-5: -Enzymes and activation energy A substance that speeds up a chemical reaction-without being a reactant-is called a catalyst. The catalysts for biochemical reactions that happen in living organisms are called enzymes. Enzymes are usually proteins, though some ribonucleic acid (RNA) molecules act as enzymes too.