Mannitol salts agar is a medium that contains a high concentration of salt (7.5%)and mannitol as a fermentable carbon source.Few organisms are able to grow on it because of its high salt concentration.Organisms that can grow and ferment mannitol will produce an acid that interacts with the pH indicator in the media,turning it yellow.Nonmannitol-fermenting organisms grow without any change to the media.Which of the following correctly describes this medium?

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Mannitol salts agar is both a selective and differential medium. Its high salt concentration makes it selective, allowing only halophilic organisms to grow, while its ability to differentiate between mannitol-fermenting and non-fermenting organisms makes it differential.

Mannitol Salts Agar Is a Medium That Contains a High