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21 Cards in this Set
- Front
- Back
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What is the difference between a Prokaryote and a Eukaryote? |
Prokaryote=no nucleus Eukaryote= has a nucleus |
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What shape is coccus? |
Spherical |
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What shape is Bacillus? |
Rod or cylinder |
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Pshychrophiles |
Cold loving |
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Mesophiles |
Optimum temp 20-40 degrees C |
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Thermophiles |
Heat loving |
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Obligate pathogen |
Organism that is never considered normal flora |
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_________is the #1 predisposition to infection |
Stress |
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The major distinguishing factor of prokaryote organisms is: |
No nucleus |
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List some properties of Endotoxins |
Released upon lysis of the cell Found only in gram negatives Are heat stable Can cause septicemia if released into the bloodstream |
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List properties of exotoxins |
Released by an intact cell Most potent toxins known |
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Prevents phagocytosis |
Capsule |
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Aids in adhereance of bacteria |
Pili |
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Maintains the shape of bacteria |
Cell wall |
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Resistant form of an organism |
Spore |
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Most widely used primary isolation media Supports growth of most pathenogenic bacteria |
Blood agar |
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Media with a similar environment to the intestines. Bacteria can only grow in the presence of bile salts |
MacConkey |
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Beta Hemolysis |
Clear zone around colony - media is transparent |
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Alpha Hemolysis |
Green slimy discoloration around colony . incomplete hemolysis |
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Gamma Hemolysis |
No lysis of RBCs. non-hemolytic |
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Delta hemolysis (double zone) |
Clear beta zone under colony, incomplete zone diffusing from clear zone |
