lysine iron agar

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  1. how is lysine iron agar differential
    LIA is used to differentiate enterics based on their abilityto decarboxylate or deaminate lysine and produce hydro- gen sulfide (H 2 S).
  2. the fermentable carbohydrate in lysine iron agar is
    dextrose glucose
  3. the primary substrate for deamination and decarboxylation reactions in this experiment is
  4. the pH indicator in this medium is broncresol which is _____ at pH 6.8 and higher and___ at ph 5.2 and below
    • 1.purple
    • 2. yellow
  5. thiosulfate when reduced becomes
    reducible sulfer
  6. ferric iron ion in this experiment reacts with hydrogen sulfide to for
    black precipitate
  7. this medium proves an ____ zone  for growth on the slant and an ____ zone for growth in the butt
    • 1. oxygen aerobic 
    • 2. no oxygen anaerobic
  8. what are all typical results and interpretations in this experiment
    Medium is darkened within 48 hours Presumptive identification as a member of Group D Streptococcus or Enterococcus1

    No darkening of the medium after 48 hours Presumptive determination as not a member of Group D Streptococcus or Enterococcus
  9. decarboxylation compare how he conditions oxygen levels are created with this experiment versus the moellers decarboxylase broth with lysine
  10. what is the selective agent
    ; bile is the selective agent added to separate the Streptococcus bovis group and e nterococci from other streptococci.
  11. Gram-negative enterics,
    demonstrate tolerance to bile
  12. fresh cultures
    Lactococcus lactis Enterococcus faecalis surrogate (Serratia marcescens)
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lysine iron agar
2013-09-18 07:51:22
lysine iron agar

lysine iron agar
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