LIFE SCIENCE

Detailed explanation-1: -Under the conditions inside living cells, biochemical reactions would occur too slowly to support life without the help of enzymes. Enzymes increase the rate of biochemical reactions by reducing the amount of activation energy needed for reactants to start reacting.

Detailed explanation-2: -Enzymes are proteins They act as catalysts, which means that they make biochemical reactions happen faster than they would otherwise. Without enzymes, those reactions simply would not occur or would run too slowly to sustain life. For example, without enzymes, digestion would be impossible.

Detailed explanation-3: -The energy required to reach the transition state (the activation energy) constitutes a barrier to the progress of the reaction, limiting the rate of the reaction. Enzymes (and other catalysts) act by reducing the activation energy, thereby increasing the rate of reaction.

Detailed explanation-4: -Enzymes in our bodies are catalysts that speed up reactions by helping to lower the activation energy needed to start a reaction.

Detailed explanation-5: -Enzymes allow reactions to occur at the rate necessary for life. In animals, an important function of enzymes is to help digest food. Digestive enzymes speedup reactions that break down large molecules of carbohydrates, proteins, and fats into smaller molecule s the body can use.