The ability to respond to changing surroundings was once considered exclusive to complex living organisms. Then came ...

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 ...

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.