Cell Theory
Published on Dec 24, 2015
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PRESENTATION OUTLINE
MAJOR PRINCIPLES OF THE CELL THEORY
- All organisms are made of cells.
- All existing cells are produced by other living things.
- The cell is the most basic unit of life.
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CONTRIBUTORS TO THE CELL THEORY
EARLY STUDIES LED TO THE DEVELOPMENT OF THE CELL THEORY.
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CONTRIBUTORS
- Hooke: first to identify cells, and he named them.
- Leeuwenhoek: observed cells in greater 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 cells.
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EUKARYOTIC CELLS
- Have a nucleus and other membrane bound organelles
- The nucleus is the largest organelle that encloses the genetic material
- Multi-cellular or single-cellular organisms
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PROKARYOTIC CELLS
- No nucleus
- No membrane bound organelles
- DNA is suspended in the cytoplasm
- Microscopic single-celled organisms
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