CoNS Q/A
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are the characteristics of Coagulase Negative Staphylococci (CoNS) when stained with Gram stain? | The CoNS would be characterized as Gram-positive cocci in clusters, meaning they appear round and purple.
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| How would CoNS appear on a Blood Agar Plate in terms of hemolysis and colony? | CoNS is non-hemolytic and grows in white, flat colonies.
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| Which media or testing method can be used to distinguish CoNS from Staphylococcus aureus? What would the CoNS positive look like? | Mannitol Salt Agar; the colonies would appear pink because CoNS cannot ferment mannitol like Staph. aureus.
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| Which two chemical components can differentiate CoNS from Staphylococcus saprophyticus? | Novobiocin (antibiotic) and Trehalose-Mannitol-Phosphatase agar (media)
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| What are some effects of the "slime" virulence factor produced by Coagulase Negative Staphylococci? | -Harder to treat
-Inhibits neutrophil chemotaxis and phagocytosis
-Inhibits Vancomycin
-Enhances adherence to plastic surfaces
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| In which body areas can CoNS be found as normal flora? | Upper respiratory tract, skin, intestinal tract, mucous membranes
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Created by:
rowleea
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