Cell Biology The Discovery and Structure of Cells_previous version by Carl Shuster, M.A./M.S. Reading Quiz Teach with this Who were the first two scientists to propose the cell theory? Hooke and Curie Schleiden and Schwann Thomson and Rutherford Virchow and Rutherford What is the smallest structural unit of living things? a chromosome a membrane the cell the ribosome Scientists that study cells are called anthropologists. biologists. toxicologists. cytologists. What features are common to all cells? a plasma membrane, RNA, and genetic material cytoplasm, a plasma membrane, and genetic material DNA and cytoplasm DNA and RNA What are prokaryotic cells? cells that contain a membrane cells that contain a nucleus cells that lack a membrane cells that lack a nucleus Under what category do animal cells fall? eukaryotic cells bacteria prokaryotic cells single cells Prokaryotic and eukaryotic cells differ in that prokaryotic cells do not have a nucleus. a plasma membrane. a ribosome. genetic material. What is one major aspect that may differ between different types of cells? the ability to reproduce the presence or absence of ribosomes the presence or absence of the nucleus the presence or absence of the plasma membrane The structure of a cell is independent from its function. true false The presence of the plasma membrane allows a cell to determine its function. determine which activities it will perform. eliminate waste without contamination. reproduce quickly and efficiently. Score Quiz