Enzymes are biological catalysts that help chemical reactions in the body happen much faster without being used up. They are crucial for digestion, metabolism, and almost all life processes, making them essential for survival.

Key properties of enzymes:

• Specificity: Each enzyme works on a specific substrate.
• Efficiency: They increase the speed of reactions enormously.
• Regulation: Enzyme activity can be switched on or off depending on the body’s needs.
• Sensitivity to pH and temperature: Extreme conditions can denature enzymes, stopping their activity.
• Reusable: Enzymes are not consumed and can act repeatedly in reactions.

Enzymes ensure that life-sustaining reactions occur fast enough to support growth, energy production, and overall health.