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Aug. 22(intro to cell cell theory)
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Aug. 22(intro to cell cell theory)


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  • 1. Biology I Mr. Nettles
  • 2. Agenda- Monday, August 22, 2011
    • Review Quiz – 10 min
    • Warm Up – 5 min
    • Daily Lesson – 15 min
    • “ Name That Guy” – 25 min
    • Wrap Up – 5 min
  • 3. Warm-Up
    • Within the next five minutes, write down as much as you know about cells.
  • 4. Today’s Objectives
    • I will define the words cell, multicellular, unicellular .
    • I will identify the scientist who contributed to the cell theory.
    • I will articulate the three principals of the cell theory.
  • 5. Exploring the Cell and Cell Theory
  • 6. What are cells?
    • Cells are the basic unit of life .
  • 7.
    • The cell theory grew from the work and research of many scientists.
    Who was involved?
  • 8.
    • More was learned about cells as microscopes improved over the years
    What did they use?
  • 9.
    • Used light microscopes to look at plant tissue
    • Noticed that a piece of dead cork had tiny chambers
    • Called them cells because they looked like the cells of a monastery
    Robert Hooke Hooke's Microscope   Hooke's drawing of Cork Cells
  • 10. Anton van Leeuwenhoek (LAY-vuhn-hook)
    • One of first people to use a microscope to study living things from nature
    • Able to see things that no one had seen before
    • First person to see the tiny organisms living in pond water
  • 11.
    • Matthias Schleiden (SHLY-dun)
      • All plants are made of cells
    • Theodor Schwann
      • All animals are made of cells
    • Rudolf Virchow
      • Looked at how cells reproduce
      • Cells come from cells that already exist
    Other Important Scientists
  • 12.
    • A theory is a well tested hypothesis that can explain a broad range of observations .
    • The cell theory applies to all living things BIG and small and has three main principals .
    • Cells can provide a lot of information about living things .
    These scientists’ studies led to the development of the cell theory!
  • 13. Three Principles of the Cell Theory
  • 14. Principle # 1
    • All organisms are made of one or more cells.
      • Some organisms are made up of one cell or unicellular
      • Others are multicellular or made up of many cells
  • 15.
      • The cell is the most basic unit of life .
    Principle # 2
  • 16. Principle # 3
    • All existing cells are produced by other living cells .
  • 17. Name that Guy
  • 18. Procedure
    • Read a brief paragraph of each scientist and underline key information .
    • Form teams of two and discuss each scientist .
    • As a team, come up with a one sentence summary of what each scientist contributed to our understanding of cells.
    • Each team shares their summary of each scientist with the class.
    • Play “Name that Guy” (Quiz, Quiz, Trade style)