Independent variable - pH level Dependent variable - Time taken for starch to be broken down. Control variables - Temperature, volume and concentrations of enzyme solution and starch solution.

This investigation tests how well the enzyme amylase performs at different pH values. Amylase is a carbohydrase enzyme made by the pancreas and by glands in and around the mouth and throat. It helps ...

Using a stew of enzymes culled from several organisms, researchers have developed a way to convert starch, available from numerous sources including corn and potatoes, into hydrogen gas at low ...