Memory Game Cell Theory Essentials Card MatchOnline version Match each cell theory concept with its brief description. by Lyla Haiat Ribosomes synthesize proteins Basic unit of life Cell membrane surrounds cell Contains genetic material All living things are made of cells The cell is the basic unit of structure and function From existing cells Protein production sites Structure and function unit Cytoplasm carries processes Cytoplasm hosts many metabolic activities Cells contain genetic material Two main cell types Cells are bounded by a cell membrane There are two main cell types: prokaryotic and eukaryotic All cells arise from pre-existing cells