Which type of medium will typically contain an indicator dye? Group of answer choices Chocolate blood agar All of the agar types listed will have indicator dyes Blood agar Mannitol salt agar Nutrient agar

All of the agar types listed will have indicator dyes.

Explanation:

1. Chocolate blood agar: This is a type of agar medium which is heated, lysed blood cells. It is used to isolate fastidious organisms and detect their hemolytic activity. It often contains phenol red as an indicator dye.

2. Blood agar: This is a type of bacterial growth medium. It contains mammalian blood (usually sheep or horse), typically at a concentration of 5–10%. It is used to distinguish bacteria that produce hemolysin. It can also contain indicator dyes.

3. Mannitol salt agar: This is both a selective and differential growth medium. It is used to differentiate and select for Staphylococcus aureus. It contains a pH indicator that changes color if the medium's pH changes as a result of mannitol fermentation.

4. Nutrient agar: This is a general purpose medium supporting growth of a wide range of non-fastidious organisms. It typically contains beef extract, peptone, and agar. Some types of nutrient agar contain dyes or indicators to differentiate various species of bacteria.

So, all of these agar types can contain indicator dyes.