Transcription of Chapter 5: Cell Structure and Function - WOU …
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Chapter 5:Cell Structure and FunctionChapter 5: Cell Structure and FunctionThe Cell is the Basic Unit of LifeEarly History:Robert Hooke(1660 s): Made first observation of cells (cork) Cell= Tiny rooms occupied by monksAnton van Leeuwenhoek(1670 s): Early observations of protistsTheodor Schwann(1830 s): Early observations of animal cells Lack of cell wall delayed discovery (made observation difficult)1) Every living organism is made up of 1 or more cells Smallest organisms = Single cells cells are functional units of multi-cellular organisms2) All cells arise from pre-existing cells Rudolf Virchow(1850 s): Principles of Modern Cell TheoryChapter 5: Cell Structure and Function (Figure )Past / present discoveriesof cell nature enabled viamicroscopy:1) Light Microscopes2) Electron MicroscopesChapter 5: Cell Structure and FunctionBasic Features of All cells :1) Plasma membranesenclose cells and regulate cell / cell and cell / environment interactions2) Genetic Information = DNA Eukaryotic cells (plants/animals): DNA contained in membrane-bound nucleus( True Nucleus ) Prokaryotic cells (bacteria): DNA located to nucleoidregion(not membrane-bound)( Before Nucleus )3) C
Chapter 5: Cell Structure and Function Basic Features of All Cells: 1) Plasma membranes enclose cells and regulate cell / cell and cell / environment interactions 2) Genetic Information = DNA
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