Aug. 22(intro to cell cell theory)


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Aug. 22(intro to cell cell theory)

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