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Cell Theory

Cell Theory. Cell Theory. Robert Hooke (1663)- Discovered cells Used light microscope to look at cork Noticed tiny compartments which he called cells Anton van Leeuwenhoek (1673) Observed living cells in pond water, animalcules, which were protists. Cell Theory. Matthais Schleiden (1838)

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Cell Theory

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  1. Cell Theory

  2. Cell Theory • Robert Hooke (1663)- Discovered cells • Used light microscope to look at cork • Noticed tiny compartments which he called cells • Anton van Leeuwenhoek (1673) • Observed living cells in pond water, animalcules, which were protists

  3. Cell Theory • Matthais Schleiden (1838) • - concluded all plants are made up of cells • Theodor Schwann (1839) • -concluded that all animals are also made up of cells. • Rudolf Virchow (1855) • - proposed that new cells are formed only from existing cells

  4. Cell Theory • Hooke, Leeuwenhoek, Schleiden, Schwann, Virchow observations led to the cell theory • All living things composed of cells • Cells are the basic unit of structure and function for living things • All cells come from pre-existing cells

  5. Cells • Cells • Tissues • Organs • Organ system

  6. 2 Classes of cells

  7. Prokaryote • Unicellular • No nucleus or organelles • DNA and RNA float in cell • 1-10 micrometers in size (smaller) • Ex: Bacteria

  8. Eukaryote • Unicellular and Multicellular • Nucleus with a membrane • Organelles with membranes • 10-100 micrometers (larger) • Ex: protists, fungi, plants, animals

  9. What is it • Prokaryote • Eukaryote 0 of 30

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  12. What is it 30 • Prokaryote • Eukaryote 0

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