Biology: Qualitative Tests For Biological Molecules (as Grade)

This column is aimed for people with a background knowledge of biology that is GCSE grade (and equivalent) or higher. While most of it should be easy to understand some of the terms and processes mentioned may be unclear if this level of knowledge is not present. One of the key things with any science is to be able to indentify what is happening and what is present in a substance or experiment. With biological molecules there are a series of  qualitative tests to confirm the presence or amount of a given substance in a sample.