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M asked in Science & MathematicsBiology · 2 months ago

Which of the plates that you used served as a positive control for growth?  MICROBIOLOGY?

  

-Mannitol salt agar  

  

-Tryptic soy agar  

  

-Blood agar  

  

-Eosin methylene blue agar

1 Answer

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  • 2 months ago

    Salt creates an osmotic gradient.

    Tryptic is toxic.

    Hugh levels of methylene blue are toxic 

    Unmodified blood is a natural growth substrate.

    • Diane A
      Lv 7
      2 months agoReport

      Blood agar is the only nutrient and neutral plate so it’s the control

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