04_lecture - Chapter4 EukaryoticMicrobial...

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Click to edit Master subtitle style  7/19/2011  Copyright © The  Chapter 4 Eukaryotic Microbial  Structure and Function 1
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 7/19/2011  Copyright © The  prominent members of ecosystems useful as model systems and industry some are major human pathogens two groups protists  fungi 2 Eukaryotic Microorganisms
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 7/19/2011  Copyright © The  membrane-delimited nuclei membrane-bound organelles that  perform specific functions intracytoplasmic membrane complex  serves as transport system more structurally complex and  3 Common Features of Eukaryotic 
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 7/19/2011  Copyright © The  4 Figure 4.2
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 7/19/2011  Copyright © The  5 Figure 4.3
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 7/19/2011  Copyright © The  6 Table 4.1
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 7/19/2011  Copyright © The  consists of the plasma membrane and all  coverings external to it plasma membrane is a lipid bilayer major membrane lipids include  phosphoglycerides, sphingolipids, and  cholesterol, all of which contribute to strength of  membrane Microdomains participate in variety of cellular  processes 7 Eukaryotic Cell Envelopes
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 7/19/2011  Copyright © The  unlike the peptidoglycan in the cell wall of  Bacteria  and  Archaea , many eukaryotes  lack or have a chemically distinct cell wall  cell walls of photosynthetic algae have  cellulose, pectin, and silica cell walls of fungi consist of cellulose,  chitin, or glucan  8 Eukaryotic Cell Envelopes - 2
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 7/19/2011  Copyright © The  consists of liquid, the cytosol, and  many organelles cytoskeleton vast network of interconnected filaments  within the cytoplasmic matrix filaments that form the cytoskeleton:  microfilaments (actin), microtubules,  intermediate filaments, and motor proteins 9 The Cytoplasm of Eukaryotes
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 7/19/2011  Copyright © The  10 Figure 4.5
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 7/19/2011  Copyright © The  minute protein filaments, 4 to 7 nm in  diameter scattered within cytoplasmic matrix  or organized into networks and  parallel arrays composed of actin protein involved in cell motion and shape  11 Microfilaments
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 7/19/2011  Copyright © The  heterogeneous elements of the  cytoskeleton, ~10 nm in diameter keratin and vimentin classes role in cell is unclear play structural role  some shown to form nuclear lamina others help link cells together to form  12 Intermediate Filaments
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 7/19/2011  Copyright © The  shaped like thin cylinders ~25 nm in  diameter of  - and  -tubulin σ β help maintain cell shape involved with microfilaments in cell  movements  participate in intracellular transport  processes  13 Microtubules
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 7/19/2011  Copyright © The  14 Figure 4.7 Parallel Arrays of  Microtubules  arranged in spiral pattern
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This note was uploaded on 09/22/2011 for the course BIO 326R taught by Professor Whiteley during the Spring '08 term at University of Texas at Austin.

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04_lecture - Chapter4 EukaryoticMicrobial...

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