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A Brief History of Microbiology Learning Outcomes

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Slide 7<br />

Slide 8<br />

• Prokaryotes<br />

• No nucleus<br />

• Bacteria<br />

– Peptidoglycan cell wall<br />

• Archaea<br />

– Cell walls NOT peptidoglycan<br />

• Eukaryotes<br />

• All have nuclei<br />

• Fungi<br />

– Cell wall chitin<br />

• Algae<br />

– Cell wall cellulose; photosynthetic<br />

• Protozoa<br />

– Unicellular; lack cell wall<br />

• Helminths<br />

– Multicellular animals<br />

Diversity <strong>of</strong> Life<br />

• Viruses are NOT classified<br />

as organisms<br />

• NOT composed <strong>of</strong> cells<br />

• NO independent metabolism<br />

• Incapable <strong>of</strong> growth or<br />

reproduction on their own<br />

• BUT do possess genes<br />

(either RNA or DNA) and<br />

evolve (rapidly) by Natural<br />

Selection<br />

• Influenza virus mutates so<br />

that an ‘annual flu shot’ is<br />

required<br />

Viruses<br />

Reconstructed 1918<br />

H 1 N 1 influenza virus<br />

Biol 240 S06 7<br />

Biol 240 S06 8<br />

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