AP BIOLOGY

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: -For instance, the term optimum pH refers to the pH resulting in maximal activity of a particular enzyme. Differing pH levels affect the shape of an enzyme. Each enzyme has an optimal pH at which the enzyme works best. Enzymes in the intestine for instance work best at pH of 7.5 (therefore, the optimum pH).

Detailed explanation-3: -The optimum pH for our blood and body tissues is about 7.2. (The use of saliva and urine test strips will show a much lower pH level due to the protein present in the solution. Saliva and urine tests from a healthy body should be about 6.6 to 6.8.) Acidosis is a condition of over-acidity in the blood and body tissues.