pH is a measure of how acidic or alkaline a solution is. The diagram below shows what happens to an enzyme when denaturation occurs. Each enzyme has an optimum pH but it also has a working range ...

A demonstration of the key points of the required practical to investigate the effect of pH on enzyme activity for GCSE biology and combined science. This short film investigates the effect of pH ...

Para-nitrophenol is yellow at alkaline pH and its concentration can be measured at 405 ... taking advantage of protein concentration and enzyme activity experimentally determined for each fraction.