Topic 3 Talaro7th-Chapter 4

Topic 3 Talaro7th-Chapter 4 - Chapter 4 [Talaro] -...

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Chapter 4 [Talaro] - Prokaryotic Cell Structure & Function I. Unity of biological life – how is “life” defined? A. Similarities among all living cells 1. Genetic code based in DNA 2. Transfer of genetic information [DNA >> RNA >> protein] 3. Energy derived from ATP 4. Common structural features -cytoplasmic membrane [phospholipid bilayer] -cytoplasm -ribosomes B. Differences between cells 1. Size 2. Structural complexity 3. Classification of microbial cells - prokaryotic cells (lack membrane-bound nucleus & other membrane-bound organelles) = Bacteria , Archaea [Note: Archaea live in ‘extreme’ environments, Figs. 4.32, 4.33] - eukaryotic cells (have a membrane-bound nucleus & organelles) = Eucarya [fungi, protozoa, algae] II. Prokaryotic cell structure [Fig. 4.1] A. From ‘outside’ to ‘inside’: appendages can provide movement 1. Flagellum (one or more) confer motility [Figs. 4.2 – 4.4] 2. Axial filaments (periplasmic flagella) in spirochetes [Fig. 4.6] B. From ‘outside’ to ‘inside’:
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This note was uploaded on 01/23/2010 for the course BIO 307D taught by Professor Moore during the Fall '09 term at University of Texas at Austin.

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Topic 3 Talaro7th-Chapter 4 - Chapter 4 [Talaro] -...

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