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med micro lab final

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Question
Answer
TSIA yellow butt   glucose utilization  
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TSIA yellow slant   lactose utilzation  
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TSIA black   H2S production  
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Phenol Red Lactose   Red in Presence of acid  
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Durham tube   gas production  
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Eosin Methylene Blue (EMB)   show lactose use with green sheen in certain bacteria  
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Mac Conkey   Isolates Gram negative bactera  
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Mac Conkey tunrs purple   lactose utilization  
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Blood Agar   shows hemolysis  
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Alpha hemolysis   slight greenish color  
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Beta hemolysis   total digestion of RBCs, clears agar  
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Gama hemolysis   no change in agar  
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Mannitol Salt Agar (MSA)   isolates staph, turns yellow with staph aureus  
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Enterotube   rapid test to identify enteric bacteria  
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zone of inhabition   determines degree of sensitivity to a particular antibiotic or substance  
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Obligate Anaerobes   must be grown in absence of oxygen (clostridum, actinomyces, bacteroides)  
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Facultative Anaerobe   may grow in presence/absence of ocygen (escherichia, listeria, staph)  
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snyders medium   turns yellow in presence of cavity-causing bacteria (strep, actinomyces, lactobacillus)  
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Urea Agar   turns "hot pink" in presence of bacteria that produces urease  
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Cryptococcus   pink dots on white/beige background  
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penicillium myclium   unfocuesd pink blobs  
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Aspergillus conidia   dark purple, looks like a dandelion flower  
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Pneymocysits carinii   purple shapes with clear boundries  
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