What are the developments that led to the cell theory?

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Presentation transcript:

What are the developments that led to the cell theory? What are the similarities and differences between prokaryotic and eukaryotic cells?

Discovery of Cells Cells were not discovered until microscope was invented (1500’s) Hooke first looked at pieces of cork (1665) Coined the term “cell” Leeuwenhoek first observed living cells Schleiden (1838) concluded that all plants are made of cells Schwann (1839) concluded that all animals are made of cells

Development of the Cell Theory This accumulated research can be summarized into the cell theory: All organisms are made of cells All existing cells are produced by other living cells The cell is the most basic unit of life

Prokaryotic Cells vs. Eukaryotic Cells Lacks Nucleus Has Nucleus Lacks Organelles Has Organelles Very small in size Larger in size Examples: Bacteria Examples: Protists, Fungi, Plants, Animals

Prokaryotic Cells vs. Eukaryotic Cells Similarities of Both Types of Cells: Cell Walls Cell (Plasma) Membrane Ribosomes Nucleic Acid

Prokaryotic Cell

Eukaryotic Cell

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