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Cell Theory: Classic vs. Modern

Cell Theory: Classic vs. Modern. Life Science Fall 2013. What would make someone think that a rabbit or a tree or a person is make up of tiny parts that cannot be seen?. Schleiden. Hook. Schwann. Leewenhoek. Hooke - the 1 st to identify and name cells

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Cell Theory: Classic vs. Modern

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  1. Cell Theory: Classic vs. Modern Life Science Fall 2013

  2. What would make someone think that a rabbit or a tree or a person is make up of tiny parts that cannot be seen?

  3. Schleiden • Hook Schwann Leewenhoek Hooke- the 1st to identify and name cells Leewenhoek- made better lenses so was able to see cells in greater detail Schleiden-found that plants are made of cells Schwann- concluded that all living things are made of cells Virchow- proposed that all cells come from other cells Contributors Virchow

  4. The “Classic” Cell Theory • All organisms are made of 1 or more cells. • The cell is the basic unit of life in all living things. • All cells come from other cells (added 20 years later by Virchow). I believe in cells!

  5. Modern Cell Theory • The cell is the fundamental unit of structure and function in living things. • All cells come from pre-exsisting cells by division • Energy flow (metabolism and biochemistry) occurs in cells Cells contain hereditary info (DNA) • All cells are the same chemically • All known living things are made of cells • There are multicellular and unicellular cells. • The activity of an organism depends on the total activity of independent cells.

  6. You will construct a foldable brochure providing information on cell theory. • Follow the directions and guidelines listed on the handout slips. • A rubric for grading is provided on the back of the handout. Cell Theory Brochure

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