1. What are macromolecules? Give examples.
The large sized complex molecules that get separated in acid-insoluble fraction using trichloroacetic acid are called macromolecules. These are polymers having a molecular mass of 10,000 daltons or more. Examples of macromolecules include proteins, carbohydrates, nucleic acids etc. Lipids are found to be present in the acid-insoluble fraction, however, they are not of high molecular weight.