Males are heavier than females; males weigh 794 to 1,323 pounds (360 to 600 kilograms), while females weigh 595 to 882 pounds (270 to 400 kg), according to the National Museum of Natural History. Moose have short tails, a hump on their shoulders and large ears that can rotate to give them stereophonic hearing.
The Effect of pH on Enzyme Activity. pH is a measure of the concentration of hydrogen ions in a solution. The higher the hydrogen ion concentration, the lower the pH. Most. enzymes function efficiently over a narrow pH range. A change in pH. above or below this range reduces the rate of enzyme reaction. considerably.
PH changes affect the structure of an enzyme molecule and therefore. affect its ability to bind with its substrate molecules. Changes in pH. affect the ionic bonds and hydrogen bonds that hold the enzyme. together, which naturally affects the rate of reaction of the enzyme. with the substrate.he optimum pH for most enzymes is pH7. In the body, amylase works mainly in the small intestines, where the. acidity from the stomach has been neutralised by the hydrogencarbonate. ions in the pancreatic juices secreted by the pancreas.