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MLT - Micro ASCP
Microbilogy
Question | Answer |
---|---|
Haemophilus influenzae becomes resistant to ampillin when the organism produces: | Beta-lactamase |
Thioglycollate broth is stored at room teperature and in the dark so that: | ther is a decreased absorption of oxygen by the medium |
Ureaplasma urealyticum are difficult to grow in the laboratory on routine media because of their requirement for: | sterols |
An antibiotic that inhibits cell wall syntheisi is: | Penicillin |
A gram-negative diplococcus that grows on modified Thayer-Martin medium can be further confirmed as Neisseria gonorrhoeae if it is: | Oxidase positive / Glucose positive / Maltose negative |
Organims that may be mistaken for Neisseri gonorrhoeae in Gram stained smears of uterine cervix exudates include: | Moraxella oslensis |
Clinical resistance to penicillin dosages appears to correlate with beta-lactamse production in: | Neisseria gonorrhoeae |
Organism considered universally susceptible to penicillin: | Streptococcus pyogenes |
First-generation cephalosporins can be adequately represented by: | cephalothin |
Media routinely used to culture Campylobacter jejuni: | Skirrow's medium |
The recovery of some Cryptococcus species may be compromised if the isolation media contains: | cycloheximide |
Organisms appropriate to Control test for Indole: | E.coli and P.mirabillis |
Organism for positive quality control test for lecithinase on egg yolk agar: | Clostidium perfringens |
Characteristics best differentiates Acinetobacter species from Moraxella species: | Production of cytochrome oxidase |
The smallest concentration of antimicrobial agent which prevents growth in subculture or results ina 99.9% decrease of the initial inoculum, is the definition of: | minimum bactericidal concentration |