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Cell Theory Notes

Cell Theory Notes

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Cell Theory Notes

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  1. Please take out you chapter 3 packet. Flip to page 104 and complete the My Planet Diary Cell Theory Notes

  2. New Procedures • Due to the misuse of classroom rules, there will no longer be bathroom time for the first and last 5 minutes of class. • ALL students should be in their seats with their bellwork out when the bell rings. • You need to go before the bell rings.

  3. Why are cells important?

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

  5. 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.

  6. Development of Cell Theory • Anton Van Leeuwenhoek • 1st person to see microorganisms • Created a simple microscope • Able to magnify up to 300X

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

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

  9. 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.

  10. Multiple Choice • Who concluded that all animals are made of cells? • Hooke • Schleiden • Schwann • Virchow

  11. Multiple Choice • Who was the first person to see microorganisms under the microscope? • Robert Hooke • Anton Van Leeuwenhoek • Matthias Schleiden • Rudolf Virchow

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

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

  14. Multiple Choice • Which of the following is NOT a function of cells? • Obtain oxygen • Eliminate threats • Obtain food and water • Get rid of waste

  15. Multiple Choice • Which of the following statements is NOT part of cell theory? • All cells are produced from other cells • Cells can absorb food and oxygen • All living things are composed of cells • Cells are the basic units of structure and function in living things

  16. http://www.youtube.com/watch?v=dgHN145_dj0