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Taxon: A group or “level” of classification Hierarchical; broad divisions are divided up into smaller divisions: 1 Kingdom (Not used by most bacteriologists) 2 Phylum (Called “Division” by botanists) 3 Class 4 Order 5 Family 6 Genus (plural: Genera) 7 Species (Both singular & plural) 8 Strain Prokaryotes (Without or technically "before" true nucleus, no nucleus is present in the cell) These include: Kingdom Bacteria (True bacteria such as Escherichia coli, Staphylococcus aureus etc) Kingdom Archaebacteria (Ancient bacteria, so called not because they're old but because they often live in conditions which are thought to have existed on earth many millions of years ago) Defined cell wall in addition to cell membrane, cell wall of peptidoglycan. The Archaea are often Extremophiles (preferring extremes of temperature for instance or extremes of acid / alkali concentration. Eukaryotes (True nucleus) Kingdom Fungi (True nucelus, asexual and sexual reproductive states) Cell wall of chitin. Kingdom Protista ------------------------------Not defined by cell structure-------------- Viruses - No true cell structure, metabolically inert "technically not alive until attached or inside the host cell." Prions - Similar to viral life cycles, proteins that are generally metabolically inert until inside a host cell. Significant pathogens include the Creutzfeldt-Jakob disease casuing Prion.

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15y ago
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15y ago

Microorganisms

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14y ago

as g+ or g-

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Q: How do we classify microorganisms?
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