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Laboratory_8_Cell_Structure_and_Function

Laboratory_8_Cell_Structure_and_Function -...

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    Laboratory 8: Cell Structure  & Function
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    Objectives Understand the cell theory Understand variation in cells Reinforce the difference between prokaryotic and eukaryotic cells.
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    Cell Theory The cell is the basic unit of life Levels below the cell such as organelles, are not technically ‘alive’ because they must be organized within a cell as parts before they can be called ‘alive’ Cell theory derived by Schwann (plants) & Schlieden (animals) in 1824 Cell is derived from the Latin “cella” meaning storeroom or small container
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    Prokaryotic Cells vs.  Eukaryotic Cells
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    Prokaryotic Cells Prokaryotic Small No nuclear membrane One circular chromosome Nucleolus is not present Nuclear body is called a nucleoid
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    Eukaryotic Cells Eukaryotic Larger (1000’s of times) Membrane-bound Organelles Paired Chromosomes Nucleolus Nuclear body is called nucleus
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    Eukaryotic Cell Nuclear envelope Nucleolus
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    Single-celled vs. Multi-cellular 
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