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    Human Cheek Epithilial Cells Stained With Methylene Blue 400xTM


    Eukaryotic Cell
    Parts, Functions & Diagrams 
     


    ANAT & PHYSGENERAL BIOCELL BIOMICRO 8wkMICRO 15wkINSTRUCTORS



    Although there are differences among eukaryotes (creature that range from amoebae to elephant), overall, eukaryotic cells share many characteristics. 
    Here's a breakdown.

    Article Summary: Animals, plants, fungi, protists, algae, and water & slime molds are eukaryotes,  organisms composed of one or more nucleated cells. Here are the basics.
    Eukaryotic Cell Structures, Functions & Diagrams
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    Eukaryotic Cell Envelope & External Structures

    • Cell Wall: The cells of plants, algae and fungi have thick, protective cell walls, which provide support, help maintain the shape of the cell, and prevent the cell from taking in too much fresh water and bursting.

    • Plasma Membrane: All cells, both prokaryotic and eukaryotic, have a plasma membrane, made mainly of phospholipids and proteins, which functions as a barrier, regulating the movement of materials between the inside and the outside of the cell.

    Illustration of a generic eukaryotic animal cell.   
    Continued ... 
    Cell Endomembrane System
    Go to PAGE 2 >
    ​Page last updated: 3/2016
    Instructor's Corner
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    • Cilia & Flagella: These extensions of the cell are covered with plasma membrane and supported internally with a structural system of microtubules—kind of like a bone covered in skin. 
    Sperm cell fertilizing egg.
    Flagella (singular flagellum), which are longer than cilia, aid in cell movement. Cilia 
    (singular cilium), which are able to beat together in a coordinated manner, can also help direct materials around the outside of the cell.

    Sperm cells have a flagellum to help them reach the eggs for fertilization.
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