Classification of Microorganisms
Classification of Microorganisms
Classification of Microorganisms
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<strong>Classification</strong>: Species Definition<br />
• Eukaryotic species: A group <strong>of</strong> closely related organisms<br />
that breed among themselves<br />
• Prokaryotic species: A population <strong>of</strong> cells with similar<br />
characteristics (Bergey’s Manual <strong>of</strong> Systematic<br />
Bacteriology is standard reference on bacterial<br />
classification).<br />
• Culture: Grown in laboratory media<br />
• Clone: Population <strong>of</strong> cells derived from a single cell<br />
• Strain: Genetically different cells within a clone<br />
• Viral species: Population <strong>of</strong> viruses with similar<br />
characteristics occupying a particular ecological niche.<br />
Viruses: not placed in kingdom nor domain – not<br />
composed <strong>of</strong> cells – cannot grow without a host cell.<br />
Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
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