<em>All cells have these four parts in common: a plasma membrane, cytoplasm, ribosomes, and DNA. But the main common feature that is most talked about it Cytoplasm and Ribosomes. Cytoplasm, the rest of the material of the cell within the plasma membrane, excluding the nucleoid region or nucleus, that consists of a fluid portion called the cytosol and the organelles and other particles suspended in it. Ribosomes, the organelles on which protein synthesis takes place.</em>
