The document discusses the history and development of cell theory. It introduces the key discoveries that led to the understanding that cells are the basic unit of life, including Robert Hooke's observation of box-shaped structures in cork that he called cells. The three main points of cell theory are presented: 1) all living things are made of one or more cells, 2) the cell is the basic unit of structure and organization, and 3) cells only come from pre-existing cells through reproduction. Microscope technologies like the compound light microscope and electron microscope are also mentioned that advanced the study of cells.
11. SECTION 7.1 CELL DISCOVERY AND
THEORY
• The invention of the microscope led to the discovery of cells
• HISTORY OF THE CELL THEORY
• 1665, ROBERT HOOKE: Made a simple microscope and look at a
piece of cork. He observed small, box-shaped structures; he called
them cellulae cell
12. The Cell Theory
• 1. All living organisms are composed of one or more
cells
• 2. Cells are the basic unit of structure and organization
of all living organisms
• 3. cells arise only from previously existing cells, with
cells passing copies of their genetic material on to their
daughter cells
