Intro to bacteriology Flashcards
smallest bacteria
Mycoplasma spp.
largest bacteria
Thiomargarita namibiensis
largest medically important bacteria
Borrelia Burgdoferi (lyme disease)
bacteria with no cell wall
Mycoplasma spp. and Ureaplasma spp.
steps of gram staining
VIAS
- crystal violet
- iodine
- acetone/alcohol (95%)
- safranin
all cocci are positive except:
Branhemella
Neisseria
Veilonella
all bacilli are negative except:
Bacillus, Clostridium (spore forming)
Actimomyces, Nocardia (fungi like)
MYCObacterium, CORYNEbactrium, PROPIONObacterium
Erysipelothrix, Listeria
steps in acid fast staining
Carbol-fuchsin
acid alcohol
methylene blue/malachite green
mordant of Ziehl-nelseen
steam
mordant of kinyoun
tergitol
method used for Leprosy
FITE-FARACO method
important enzyme in obligate aerobe
superoxide dismutase
peroxidase
catalase
example of obligate anaerobe
Actinomyces
Bacteriodes
Clostridium
example of capnohilic bacteria
(HACEK) Haemophilus Acinobacter Cardiobacterium Eikenella Kingella
Which has higher toxicity exotoxin or endotoxin?
Exotoxin - high toxicity
Vaccine from exotoxin
Toxoids
An exotoxin gram positive bacteria that is NOT rapidly destroyed at 60C?
Staphylococcus enterotoxin
What are the disease caused by: enterotoxin & endotoxin?
Exo: tetanus, botulism
Endo: Meningococcemia
Test that detects endotoxin the reagent used
Limulus lysate test
Reag: blood of horse-shoe crab (limulus polyphemus)
Principle of limulus lysate test and its positive indication?
Amebocyte ( WBC) + endotoxin = clumping (blue color)
Indicator of DNASE test?
Positive result?
Methyl green
Clearing (Staph. aureus, Moraxella, Serratia)