CELL THEORY

MAJOR PARTS OF THE CELL THEORY

• All organisms are made of cells
• All existing cells are made by other cells
• The cell is the most basic unit of life

CONTRIBUTORS TO THE CELL THEORY

• Robert Hooke: first to identify and name cells
• Anton Van Leeuwnhoek: observed cells in greater detail
• Matthias Schleiden: first to note that plants are made of cells
• Theodor Schwann: concluded that all living things are made of cells
• Rudolf Virchow: proposed that cells come from other cells

PROKARYOTIC CELLS

• No nucleus
• No membrane bound organelles
• DNA suspended in cytoplasm
• Single celled organisms

EUKARYOTIC CELLS

• Has a nucleus
• Has membrane bound organelles
• Nucleus encloses genetic information
• Multi or single celled organisms