Multiple choice

Which among the following mediums are selective for Gram-negative bacteria? a. Hektoen enteric agar b. MacConkey agar c. Mannitol salt agar d. Yeast Malt Agar

  1. 1 and 2

  2. 1 and 4

  3. 2 and 3

  4. 2 and 4

  5. 3 and 4
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This option is correct because Hektoen Enteric Agar is a selective and differential agar for the isolation and cultivation of the gram-negative enteric microorganisms, especially Salmonella and Shigella. MacConkey Agar is a selective and differential medium designed to isolate and differentiate enterics based on their ability to ferment lactose.

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