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Cell Theory Notes

Cell Theory Notes. Why are cells important?. Cells. Obtain oxygen Obtain food and water Get rid of waste. Discovery of Cells. Cells were discovered when the microscope was improved. In 1665 , Robert Hooke cut a thin slice of cork and looked at it under his microscope .

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Cell Theory Notes

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  1. Cell Theory Notes

  2. Why are cells important?

  3. Cells Obtain oxygen Obtain food and water Get rid of waste

  4. Discovery of Cells • Cells were discovered when the microscope was improved. • In 1665, Robert Hooke cut a thin slice of cork and looked at it under his microscope. • Hooke thought the cork seemed to be made up of empty boxes, which he named cells.

  5. Development of Cell Theory • Anton Van Leeuwenhoek • 1st person to see microorganisms • called them “wee beasties” and “animalcules” • Created a simplemicroscope in 1674 • Able to magnify up to 300X

  6. Development of Cell Theory • In 1830s, Matthias Schleidenused a microscope to study plants and concluded that all plants are made of cells

  7. Development of Cell Theory • Theodor Schwann, after observing different animal cells, concluded that all animals are made up of cells.

  8. Development of Cell Theory • Several years later, Rudolf Virchow hypothesized that cells divide to form new cells. • Virchow proposed that every cell came from a cell that already existed. • These men’s ideas combined makes up the cell theory.

  9. Development of Cell Theory • Eventually, they combined their ideas and became convinced that all living things are made of cells.

  10. The Cell Theory composed of 3 statements: • All living things are composed of cells • The cell is the basic unit of structure and function. • All cells are produced from other cells

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