When performing quality control on motility media, which of the following organisms should be used?

a. Acidovorax facilis and Sphingomonas spp.
b. Centers for Disease Control and Preven-tion (CDC) group IIc and CDC group IIe
c. CDC group Iii and Sphingobacterium mi-zutaii
d. CDC group IIh and A. facilis


D
CDC group IIh and A. facilis are two organisms that are negative and positive, respectively, for motility.

Biology & Microbiology

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