The DNA contains the genes which give instructions on the type and the quantity of protein that is to be made. These genetic instructions are transcript into RNA molecules. The RNA molecules in conjunction with the ribosomes translate the instructions on the RNA into protein; this is called protein synthesis. The manufacture protein is then moved into the endoplasmic reticulum and from there to the golgi body where packaging and some modifications can occur. From the golgi body, the protein is sent to the cell membrane where it is exit the cell through exocytosis.
