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15 Cards in this Set
- Front
- Back
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Phylogenic |
Evolutionary history of an organism - who evolved from who. |
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Taxonomy |
Taking a group of organisms and dividing them into (smaller groups)- reflect relationships between organisms. Also useful for identifying known organisms |
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Phylogenic Tree |
Shows evolutionary history of org. Not including viruses. 3 main groups: •Archae •Bacteria •Eukaryotic Each branch represents a major evolutionary event. |
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Staphylococcus aureus |
Colonies can be pure white- TSA Or they can be pale yellow- blood Agar (TSA w/ sheep blood) •Strains of Staph. aureus (MRSA) Methicillin Resistant S. aureus. Causes toxic shock syndrome and/ or food poisoning enterotoxin and also causes skin infections:boils. |
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Hierarchy of Classification |
Ordering of taxonomic groups from largest to smallest. An inverted triangle w/ domain occupying the top and species occupying the bottom. This order-->Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species. |
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Physiology |
What is preferred temperature for optimum growth? -bacteriums relationship to oxygen, is it an aerobe or anaerobe, facultative? -pH tolerance? -Most bacteria want pH to be close to neutral, some more acidic or more alkaline. |
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Growth characteristics of colonies |
Pigment -size -shape -texture -Gram - or Gram + -Acid fast or non-acid fast |
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Nutritional requirements |
What nutrients can organism metabloize? |
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Genetic Characteristics |
DNA homology studies -comparing DNA samples from 2 organisms to look at the specific sequence of nucleotides & more similarities we find the more closely related DNA base composition: ratio of Guanine to Sinine |
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Phage typing |
The identification of bacteria by testing their vulnerability to bacterial viruses. |
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Phage |
Virus that is able to attach to very specific bacteria and infect them. This is how phage infects bacteria and converts it to a virus and reproduces itself. Can determine the type of strain of bacterium by examining it's susceptibility to certain bacteria phages. |
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Protein analysis |
A comparison of proteins samples taken from two or more organisms. More similarities between them, the more closely related. |
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Microscopic morphology |
Shape and arrangement of cells, structural characteristics (like capsules (endospore),etc.) -staining characteristics Gram + or Gram - & Acid fast or Non-acid fast -Growth characteristics of media - solid or liquid, pigment of colonies, texture, size and shape. |
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Bergeys Manual of Determinative Bacteriology (9th edition) |
Info on all known and named bacteria. ONLY bacteria in this book. |
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The International Journal of Systematic Bacteriology |
New additions, changes, etc. Are published (species names) |
