AP BIOLOGY

Detailed explanation-1: -The enzyme speeds up the reaction by lowering the activation energy needed for the reaction to start. Compare the activation energy with and without the enzyme. Enzymes generally lower activation energy by reducing the energy needed for reactants to come together and react.

Detailed explanation-2: -In the absence of enzymatic catalysis, most biochemical reactions are so slow that they would not occur under the mild conditions of temperature and pressure that are compatible with life.

Detailed explanation-3: -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-4: -The enzyme acts as a catalyst and helps speed up the chemical reaction, and it takes place by reducing the activation energy. In addition, the reduction of activation energy help to proceed with the biological reaction at low temperature.