Lecture 2.1 - Cell shape and size The cytoplasmic membrane...

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Cell Structure and Function in Bacteria and Archaea Cell shape and size The cytoplasmic membrane and transport Cell walls of prokaryotes Other surface structures and inclusions Microbial locomotion
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The Importance of Being Small Transport rates are a function of the surface area of the cell membrane relative to cell volume. Rapid nutrient and waste transport into and out of the cell, allowing for faster metabolic rates and growth rates. Rapid growth rates rapid production of large populations of cells, which rapidly adapt to changing conditions and greatly affect the constitution of an ecosystem
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Tab. 4-1
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Cytoplasmic Membrane
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Transport Cholesterol, a sterol Constituent of eucaryotic membranes Diploptene, a hopanoid Constituent of membranes of Bacteria (but not Archaea)
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Unique Features of Membranes from Species of Archae Bacteria Archaea R= fatty acids R= repeating units of isoprene isoprene
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Transport
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Cytoplasmic Membrane Figure 4.17
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Transport
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A - MSC only
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