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med micro lab final
| Question | Answer |
|---|---|
| TSIA yellow butt | glucose utilization |
| TSIA yellow slant | lactose utilzation |
| TSIA black | H2S production |
| Phenol Red Lactose | Red in Presence of acid |
| Durham tube | gas production |
| Eosin Methylene Blue (EMB) | show lactose use with green sheen in certain bacteria |
| Mac Conkey | Isolates Gram negative bactera |
| Mac Conkey tunrs purple | lactose utilization |
| Blood Agar | shows hemolysis |
| Alpha hemolysis | slight greenish color |
| Beta hemolysis | total digestion of RBCs, clears agar |
| Gama hemolysis | no change in agar |
| Mannitol Salt Agar (MSA) | isolates staph, turns yellow with staph aureus |
| Enterotube | rapid test to identify enteric bacteria |
| zone of inhabition | determines degree of sensitivity to a particular antibiotic or substance |
| Obligate Anaerobes | must be grown in absence of oxygen (clostridum, actinomyces, bacteroides) |
| Facultative Anaerobe | may grow in presence/absence of ocygen (escherichia, listeria, staph) |
| snyders medium | turns yellow in presence of cavity-causing bacteria (strep, actinomyces, lactobacillus) |
| Urea Agar | turns "hot pink" in presence of bacteria that produces urease |
| Cryptococcus | pink dots on white/beige background |
| penicillium myclium | unfocuesd pink blobs |
| Aspergillus conidia | dark purple, looks like a dandelion flower |
| Pneymocysits carinii | purple shapes with clear boundries |
Created by:
kallenpoole
on 2011-12-12