Cell Structure and Function

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Students Will: summarize the contributions scientists have made toward the cell theory state the cell theory.
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Cell Structure and Function Prof. Ainar S.G.(M.Sc,M.Phil) Dept of Zoology,S.M.Joshi Collge , Hadapsar. F.Y.B.Sc

Cells Smallest living unit Most are microscopic

Discovery of Cells Robert Hooke (mid-1600s) Observed sliver of cork Saw “row of empty boxes” Coined the term cell

Cell theory (1839)Theodor Schwann & Matthias Schleiden “ all living things are made of cells” (50 yrs. later) Rudolf Virchow “all cells come from cells”

Principles of Cell Theory All living things are made of cells Smallest living unit of structure and function of all organisms is the cell All cells arise from preexisting cells (this principle discarded the idea of spontaneous generation)

Cell Size

Characteristics of All Cells A surrounding membrane Protoplasm – cell contents in thick fluid Organelles – structures for cell function Control center with DNA

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