11/3/14 objective: what are the components of the cell theory? do now: what is a cell?
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Cells What is a cell?TRANSCRIPT
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11/3/14Objective: What are the components of the cell theory?
Do Now: What is a cell?
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How was the creation of this important in the discovery of
cells
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Cells• What is a cell?
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Sickle Cell Anemia
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Contributions of Scientists
• Robert Hooke: In 1665, he observed a thin slice of cork using a light microscope and named the “compartments” cells.
• Matthius Schleiden: All plants are made of cells
• Theodore Schwann: All animals are made of cells
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What are the three components of the Cell Theory?
• 1. All living organisms are made from cells
• 2. Cells are the basic unit of structure and function in living things
• 3. New cells are produced from existing cells
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The Discovery of Cells• Can you see a cell with your naked eye?• How were cells discovered?Light Microscope:
Uses light to magnify objects up to 1000x
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Types of Microscopes
• Scanning Electron Microscope (SEM): used to study the surface structures of cells
• Transmission Electron Microscope(TEM): used to explore internal structure of cells