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Introduction to the Cell

Introduction to the Cell. Discovery of the Cell. 1665 Robert Hooke saw the cell walls of cork – called them cells. I673 Anton van Leeuwenhoek saw the first living cells in a drop of water – “little animals”. 3 important discoveries that lead to the cell theory.

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Introduction to the Cell

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  1. Introduction to the Cell

  2. Discovery of the Cell 1665 Robert Hooke saw the cell walls of cork – called them cells

  3. I673 Anton van Leeuwenhoek saw the first living cells in a drop of water – “little animals”

  4. 3 important discoveries that lead to the cell theory. • 1838 Matthias Schlediden concluded all plants were composed of cells

  5. 3 important discoveries that lead to the cell theory. • 1839 Theodor Schwann concluded all animals were composed of cells • 1838 Matthias Schlediden concluded all plants were composed of cells

  6. 3 important discoveries that lead to the cell theory. • 1838 Matthias Schleiden concluded all plants were composed of cells • 1839 Theodor Schwann concluded all animals were composed of cells • 1855 Rudolf Virchow observed cell division.

  7. The Cell Theory • All living things are composed of cells

  8. The Cell Theory • All living things are composed of cells • Cells are the basic units of structure and function in an organism

  9. The Cell Theory • All living things are composed of cells • Cells are the basic units of structure and function in an organism • Cells come only from the reproduction of existing cells

  10. Cell Diversity – not all cells are alike They vary depending on their function

  11. Cells contain a variety of internal structures calledorganelles. Organelle –a cell component that performs specific functions for the cell

  12. The 2 main types of cells: • Prokaryotes – cells without a nucleus or membrane-bound organelles Bacteria cells

  13. Eukaryotes – cells that have a nucleus and membrane bound organelles.

  14. Quick Quiz • Who were the three scientists to develop the cell theory? • What are the three parts of the cell theory? • What are the two main types of cells?

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