Cell Theory § All organisms are made up of one or more cells § Cells are the basic unit of structure and function of all organisms § All cells come from preexisting cells
Development of the Cell Theory § Janssen made the first compound microscope § Hooke gave a name to the little boxes he saw under his microscope § Schleiden studied plant parts under a microscope § Schwann observed many different animals and came to a conclusion § Virchow observed that cells come from preexisting cells.
Cells→ tissue→ organs→ What is next in this series? § § A. habitats B. Organisms C. Systems D. Organelles
C. systems
Which level of organization below is the most basic or primary level of organization? § § A. cell B. tissue C. organ D. organ system
A. cell
Many living organisms have body structures that go from very simple to very complex. Which of these places the structures in order from least complex to most complex? § § A. system, organ, tissue, cell B. organ, tissue, cell, system C. cell, system, organ, tissue D. cell, tissue, organ, system