Question

fill in the blank question
complex media contain extracts of organisms in the groups □, □, or □, including ground-up cells, tissues, and secretions.
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Explanation:

Complex media in microbiology typically contain extracts from yeasts, plants, or animals. These sources provide a mix of nutrients as they include ground - up cells, tissues, and secretions which are complex in composition and supply various growth factors, nutrients etc. for microbial growth.

Answer:

yeasts, plants, animals