BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The most favorable pH value-the point where the enzyme is most active-is known as the optimum pH. This is graphically illustrated in Figure 14. Extremely high or low pH values generally result in complete loss of activity for most enzymes. pH is also a factor in the stability of enzymes.

Detailed explanation-2: -Each enzyme has an optimal pH value where it reaches its maximum activity, called the optimum pH. If the pH is lower or higher than the optimum pH, the enzyme activity decreases until it is inactivated.

Detailed explanation-3: -The optimum temperature for an enzyme is 20-25 degrees Celsius and the optimum pH is 7 (neutral).

Detailed explanation-4: -PH not only affects the activity of the enzyme, but also affects the charge and shape of the substrate, so that the substrate cannot bind to the active site, or cannot be catalyzed to form a product. In a narrow range of pH, the structural and morphological changes of enzymes and substrates may be reversible.