AQA GCSE Biology Required Practical 5: Investigating pH and Amylase

A revision video mainly aimed at students studying for AQA GCSE Combined Science (8464) or AQA GCSE Biology (8461) describing how to carry out Required Practical 5: investigate the effect of pH on the rate of reaction of amylase enzyme. We look at how to use iodine to test for the presence of starch, and how to monitor this using a continuous method. (See specification part 4.2.2.1 The human digestive system)