Which type of medium allows a variety of microbes to grow but often changes color in the right conditions, such as when fermentation causes a pH change?

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The type of medium that allows a variety of microbes to grow but often changes color in the right conditions, such as when fermentation causes a pH change, is called a differential but not selective medium. This type of medium differentiates between different types of bacteria based on their ability to perform certain metabolic processes, such as fermentation, and changes color or produces a visible reaction only in the presence of specific bacteria or as a result of their metabolic activity. Thus, it allows for the identification of certain bacterial species or groups based on their metabolic characteristics, but does not inhibit the growth or survival of other bacteria. Selective media, on the other hand, contain specific ingredients or characteristics that prevent the growth of certain types of bacteria while allowing others to grow, based on their resistance or susceptibility to these factors, but do not necessarily differentiate between them based on their metabolic activity.

Which Type of Medium Allows a Variety of Microbes to Grow