02 Cells and membranes

02 Cells and membranes - Cells and Membrane Transport I....

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Cells and Membrane Transport I. Cell theory: A. All living things are made of cells B. All cells come from other cells C. The cell is the basic unit of life II. There are two major types of cells A. Eukaryotic Cells 1.Eukaryotic cells include animal and plant cells 2.Eukaryotic cells have 3.DNA in a nucleus, with paired linear chromosomes 4.Compartmentalized specialized structures called organelles B. Prokaryotic Cells 1.Prokaryotic cells have: a)Single circular chromosome b)Cell wall, plasma membrane 2.Prokaryotic cells DO NOT have: a)A nucleus b)Organelles C. Bacteria much smaller than eukaryotic cells III. Cell Structure A. All cells are enclosed by a structure called a plasma membrane B. The Plasma Membrane is a Fluid Mosaic of Lipids and Proteins C. Phospholipids arrange themselves into phospholipid bilayers in water D. Water freely crosses the membranes. This can be a problem 1.If water leaves the cell, it may shrink 2.If water enters, it may swell or burst IV. Cell Wall A. Cell walls give plant and fungal cells structure
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This note was uploaded on 05/15/2011 for the course BIO 120 taught by Professor Throgerson during the Fall '08 term at Grand Valley State.

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02 Cells and membranes - Cells and Membrane Transport I....

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