3 - * BIO 311c Fall 2010 Dont forget, discussion periods...

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BIO 311c Fall 2010 Lecture 3 – Monday 30 Aug. 2010 1 * Don’t forget, discussion periods start this week.
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A standard way of classifying all living organisms is to separate them into three broad groups, called domains. Domain Bacteria Domain Archaea Domain Eukaryota prokaryotes (kingdom monera) eukaryotes The Domain Eukaryota may be divided into 4 Kingdoms Protists Fungi Plants Animals most are unicellular most are multicellular These will be considered in most detail in this course. 2
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prokaryotes eukaryotes A Five-kingdom System for Classifying all Living organisms From textbook Fig 26.21 p. 529 Occasionally illustrations will be shown from locations in the textbook other than those within the reading assignment. You are responsible for knowing the information in those illustrations. 3 All prokaryote organisms consist only of prokaryotic cells. All eukaryotic organisms consist only of eukaryotic cells.
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Images of Yeast Cells Using Different Kinds of Microscopes light microscope Image (LM image)) transmission electron microscope image (TEM image) scanning electron microscope image (SEM image) 5 ȝ m Note: Yeasts are eukaryotic organisms. They are among the most extensively studied of all living organisms by cell and molecular biologists. 4 Microscopic examination has been essential to an understanding of cell structures and functions. The field of cell biology has advanced in parallel with advances in cell biology.
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Prokaryotic Cells 5
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A prokaryotic cell Textbook Fig. 6.6, p. 98 Also see Concept 27.1, p. 573 Most prokaryotic cells are less than 5 ȝ m in diameter. Many are less than 1 ȝ m in diameter. diagrammatic illustration based on electron microscope observations Transmission electron microscope image 6
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See textbook Figure 27.2, p 557 Examples of the appearance of prokaryotes at high magnification Prokaryotic cells are simple in shape. (colorized SEMs) 7
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Prokaryotes occur as single cells or as simple organizations of cells. Prefix diplo- : Two cells together
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This note was uploaded on 01/21/2011 for the course BIO 311C taught by Professor Satasivian during the Fall '08 term at University of Texas.

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3 - * BIO 311c Fall 2010 Dont forget, discussion periods...

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