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The Cell Theory

The Cell Theory. Hairy T-cell. What is it?. Accepted explanation of the relationship between cells and living things, 3 Part Theory. Part 1 of the Theory 1. All living things are made of cells. Part 2 of the Theory. 2. The cell is the basic structural and functional unit of life.

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The Cell Theory

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  1. The Cell Theory Hairy T-cell

  2. What is it? Accepted explanation of the relationship between cells and living things, 3 Part Theory. Part 1 of the Theory 1.All living things are made of cells.

  3. Part 2 of the Theory 2. The cell is the basic structural and functional unit of life.

  4. Part 3 of the Theory 3. All cells come from pre-existing cells. yeast cells dividing

  5. How were they able to come up with this theory? Hooke (circa 1663) I made the first microscope and observe small spaces and called them cells! I had no idea how important this would be later.

  6. Who came up with this theory? 1. Schleiden (circa 1838) All plants are made of cells! Onion skin cells

  7. Who came up with this theory? 2. Schwann All animals are made of cells! Human red blood cells

  8. Who came up with this theory? 3. Virchow All cells come from pre-existing cells!

  9. How can we study cells? Problem: They are microscopic! Solution: Use a microscope! DUH!

  10. Types of Microscopes Compound Light Microscope • Light passes through lenses to magnify image up to 1000X • Can observe living cells

  11. Types of Microscopes Electron microscope • Uses a beam of electrons to magnify image > 1000X • Kills cells being observed

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