CELL THEORY

MAJOR PRINCIPALS OF THE CELL THEORY

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

CONTRIBUTORS TO THE CELL THEORY

HOOKE

• Hooke was the first to identify cells and name them

LEEUWENHOEK

• Leeuwenhoek made better lenses
• He also observed cells in more detail

SCHLEIDEN

• First to note that plants are made of cells

SCHWANN

• Concluded that all living things are made of cells

VIRCHOW

• Proposed that all cells come from other living cells

PROKARYOTIC CELLS

• Do not have nucleus
• No membrane bound organelles
• The cells DNA is suspended in the cytoplasm
• Microscopic, single-celled organisms

EUKARYOTIC CELLS

• Nucleus and membrane bound organelles
• Nucleus is the largest organelle & encloses genetic information
• Can be multi-cellular or single celled

CELL THEORY!!