Clostridium Flashcards
(46 cards)
Describe the habitat of clostridium
soil, mud , water, gut
Describe the morphology of clostridium
7-10 micrometer rod
All clostridium Bb are flagellated T/F
F all except C.perfr.
Clostridium are spore forming Bb T/F
T
Describe the oxidation fermentation test
test about carbohydrate metabolism
What does the OF test differentiate
Whether or nor the Bb use oxidative or fermentative metabolism
The spore in Clostridium is central as in B.anthracis T/F
F the spore is terminal or subterminal
Clostridium is a capsulated Bb T/F
F only C.perfringens is capsulated
What could destroy a clostridium spore
boiling for 3-4h in case of C.botulinum spore
Clostridium stain how?
Gram +
Does Clostridium propagate in anaerobic conditions
yes
All Clostridium can’t tolerate Oxy T/F
F the oxygen tolerance varies
What is the opt. temp. for Clostr.
37°c
Catalase oxidase
C - , O-
OF test
fermentative
Clostridium species produce several exotoxins name them
- alpha - lethal, necrotic, lecitinase
- beta - lethal, necrotic
- epsilon - lethal, necrotic
- iota - letha, necrotic
What agar can Clostridium be cultured on
-nutrient & blood agar
Name the Species that can cause malignant oedema (gas gangrenic diseases)
- C. septicum
- C.novyi
- C.haemolyticum
- C.histolyticum
- C.sordelli
Whcih Bb causes black leg in Ru,Ov
C. chauvoei
Whcih Bb causes human gas gangrene
C.perfringens A , C. novoyi A
Name the species which can cause enterotoxaemic diseases
- C. perfringens A,B,C,D
- C. colinum
Which Bb causes necrotic enteritis of chicken
C.perfringens A/C
Which Bb causes lamb dysentery
C. perfringens B
Which Bb causes chronic enteritis of pigs
C. perfringens C
