Term
| Bacillus spp. share the same Gram stain morphology, catalase reaction, and oxygen requirements. What are they? |
|
Definition
- Gram-positive bacilli
- aerobic
- catalase positive |
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|
Term
| Which species of Bacillus is NOT beta-hemolytic? |
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Definition
|
|
Term
| What species of Bacillus is often used as a QC agent for autoclaving? |
|
Definition
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|
Term
| Emetic food poisoning caused by Bacillus cereus is associated with what food? |
|
Definition
|
|
Term
| Which species of Bacillus is non-motile? |
|
Definition
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|
Term
| Which of the following GPR is non-branching: Actinomyces, Listeria, Nocardia? |
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Definition
|
|
Term
| What organism is non-motile but will develop "mascara brush" growth in motility media? |
|
Definition
| Erysipelothrix rhusiopathiae |
|
|
Term
| Which of the following is catalase negative: Bacillus spp, Corynebacterium spp., Erysipelothrix rhusiopathiae, or Listeria monocytogenes? |
|
Definition
| Erysipelothrix rhusiopathiae |
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|
Term
| What do we know about a bacterium if its OF test showed a color change in the open tube but not the closed tube? |
|
Definition
|
|
Term
| What normal flora of the female genital tract is resistant to vancomycin? |
|
Definition
|
|
Term
| What normal flora of the female genital tract is associated with clue cells when overgrown? |
|
Definition
|
|
Term
| What is the most significant pathogen among Corynebacterium spp.? |
|
Definition
| Corynebacterium diphtheriae |
|
|
Term
| What characteristic microscopic morphology is exhibited in Corynebacterium spp.? |
|
Definition
| Palisade "L-V" arrangement, beaded/irregular staining |
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|
Term
| What C. diphtheriae toxin fragment is responsible for mediating the entry of the toxin into the cytoplasm of the host cell? |
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Definition
|
|
Term
| What test is used to demonstrate the presence of C. diphtheria toxin? |
|
Definition
|
|
Term
| When is infection with Corynebacterium jeikeium most frequently seen? |
|
Definition
| Among bone marrow transplant patients on immunosuppressive drugs. |
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|
Term
| What organism commonly causes food poisoning even in refrigerated foods, because it grows well from 0.5C to 45C? |
|
Definition
|
|
Term
| Listeria monocytogenes has what characteristic motility pattern? |
|
Definition
|
|
Term
| What organism is V agar used to isolate and differentiate? |
|
Definition
|
|
Term
| What are Loeffler's media and Telluride media used to differentiate? |
|
Definition
|
|
Term
| What test is used to differentiate Group B Streptococcus from Listeria monocytogenes, and what reaction does each have? |
|
Definition
| CAMP test - GBS is positive (arrow zone of hemolysis seen) and L. monocytogenes is negative. |
|
|
Term
| What are the catalase, motility, and H2S reactions for Actinomyces? |
|
Definition
- catalase negative
- non-motile
- H2S positive |
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