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7 Cards in this Set
- Front
- Back
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Name the 7 gram + bacteria.
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1. Staph - cocci coccus
2. Strep - cocci strips 3. Enterococcus - cocci strips 4. Clostridium - sporulating rods 5. Bacillus - sporulating rods 6. Corynebacterium -rods 7. Listeria - rods Most other bacteria are Gram negative rods or pleimorphic. Except: Neisseria (the only gram negative cocci. It is diplococci to be exact) and the Spirochete group (Trepnoemes, Borrelia, Leptospira) that are gram negative spirals. |
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Match the description below to the bacteria group of either mycobacteria, mycoplasma, spirochetes.
1. have gram negative cell wall but are too small to be seen in light microscope and must be visualized with darkfield microscopy 2. weakly gram positive but stain better with acid-fast stain 3. do not have a cell wall and look "fried-egg" like. Only have a cell membrane and are neither gram positive or gram negative. |
1. spirochetes (Trepnoemes - syphillis, Borrelia- lyme disease, relapsing fevers, Leptospira- leptospirosis)
2. mycobaterica 3. mycoplasma |
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Which of the following have neurotoxins?
A. Colstridium botulinum B. Clostridium tetani C. E. coli D. Staphylococcus aureus E. Strep pyogenes (Group A) |
A. Colstridium botulinum - botulinum toxin
B. Clostridium tetani - tetanospasmin |
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Which of the enterotoxins listed yields food poisoning?
A. Bacillus cereus B. E.coli C. Shigella D. Staphylococcus aureus |
A. Bacillus cereus - heat stable toxin --> vomiting that lasts < 24 hours, some diarrhea
D. Staphylococcus aureus - staphylococcal heat stable toxin --> diarrhea and vomiting that lasts for < 24 hours |
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Both of these organisms activate the endogenous mediators of sepsis, such as the cytokine IL-1. One results in Scarlet fever and the other in toxic shock syndrome.
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Streptococcus pyogenes (Group A) - Streptococcus pyrogenic toxin
Staphylococcus aureus - (TSST-1) |
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What are the four bacteria that produce exotoxins that increase levels of cAMP?
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cAMP!
c= cholera (Virbrio cholera) A = anthrax (Bacilluss antracis) M = montezuma's revenge (popular name for enterotoxic E.coli) P= pertussis (Bordetella pertussis) |
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Rheumatic fever occurs after...
A. untreated Group A strep skin infection B. untreated Group A strep pharyngitis infection C. untreated Group B strep infection D. untreated Group D strep infection |
B. untreated Group A strep pharyngitis infection
rheumatic fever is a delayed antibody mediated disease. There are antigens in the heart that are similar to the antigens of Group A strep. It involves: fever, myocarditis, arthritis, chorea (uncontrolled dance-like movements of the extremities) which usually begins 2-3 weeks after the pharyngitis, suncutaneous nodules, rash. alternatively, acute post-streptococcal glomerulonephritis occurs a week after infection of either pharynx or skin :( |
