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UNIT 3-Lab Notes 9.Bacteria Identification through Functional Media-Motility Testing FUNCTIONAL MEDIA ●Functional media→ often used to determine the identity of unknown microbes, and come in several forms. ○Selective media→ contain agent(s) that prohibit the growth of some organisms, thus selecting or allowing the growth of other organisms. ■Helpful when growing mixed cultures containing many different microbes when only one or two specific microbes are of interest. ○Differential media→ enable many types of microbes to grow; however, differential media contain an indicator that enables differences between microbes to be visualized. ■In this experiment, you will use differential media to determine motility of two species of bacteria. ○Enriched media→ supplemented with essential growth factors for organisms that do not grow well on typical media. MOTILITY ●Motility → self-propelled motion, is present in many but not all bacteria.Determining the presence of motility is important for the classification of microbes. Bacteria move by a