what does the macromolecule protein do
macromolecules are the proteins that do most of the jobs throughout a cell. they are responsible for every reaction that is catalysed by a enzyme and also for structural proteins such as collagen and histones. anything that requires help doing things around a cell is helped by a protein of some discription.nzymes are proteins that catalyze reactions. Without them, it would take you days to digest a single meal. Proteins in the extracellular matrix hold your cells together to form tissue and then organs. They are present in all your cells.