proteins are the most imperative macromolecule in the cells. proteins catalyze responses in our bodies and transport molecules for example oxygen and it also transmit messages from cell to cell. all enzymes are proteins and proteins frame the premise of most cell structures. regardless of whether we are discussing carbon dioxide in photosynthesis or oxygen transportation in the blood we are managing forms that depend on proteins with functions. there a a wide range of proteins in the cell each with its own capacity and physical structure. among a wide range of parts that proteins serve in the cell proteins have auxiliary parts to enable the cell to keep its shape control movement and with the repair process. proteins 2018 proteins fall into four major classes enzyme structural proteins motility proteins and regulatory proteins. proteins are enzymes that serve as catalysts which increase the rates of reactions in the body. structural proteins provide support and structure to cells and organelles giving them their characteristic appearances. mortality proteins have significant roles in the movement of the cells and the intercellular structures. regulator proteins ae in charge of the control and coordination of cellular functions ensuring that cellular activities are regulated to meet cellular need.