Multiple choice

Match the media in Group I for screening microbial isolates in Group II.

 
Group I
Group II
P. Bile esculin agar 1. Neisseria
Q. Thayer-Martin agar 2. Enterococcus
R. Cetrimide agar 3. Corynebacterium diphtheriae
S. Hoyle's agar 4. Pseudomonas aeruginosa

  1. P - 1; Q - 2; R - 3; S - 4

  2. P - 1; Q - 3; R - 2; S - 4

  3. P - 2; Q - 1; R - 4; S - 3

  4. P - 3; Q - 2; R - 4; S - 1

  5. P - 4; Q - 2; R - 3; S - 1
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Correct answer. Bile esculin agar (BEA) is a selective differential agar used to isolate and identify members of the genus Enterococcus. Thayer-Martin agar (or Thayer-Martin medium) is a Mueller-Hinton agar with 5% chocolate sheep blood and antibiotics. It is used for culturing and primarily isolating pathogenic Neisseria bacteria. Cetrimide agar is a type of agar used for the selective isolation of the gram-negative bacterium, Pseudomonas aeruginosa. Hoyle's agar is a selective media that uses tellurite to differentially select Corynebacterium diphtheriae from other upper respiratory tract flora.

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