Lack of motility is a characteristic of which genus?

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Multiple Choice

Lack of motility is a characteristic of which genus?

Explanation:
Motility is determined by the presence of flagella. Klebsiella species are non-motile because they lack flagella, so they do not move away from the inoculation line in motility media and form non-diffusing colonies. In contrast, most related genera such as Enterobacter and Salmonella are motile due to flagella, with Serratia typically motile as well. Therefore, the lack of motility points to Klebsiella.

Motility is determined by the presence of flagella. Klebsiella species are non-motile because they lack flagella, so they do not move away from the inoculation line in motility media and form non-diffusing colonies. In contrast, most related genera such as Enterobacter and Salmonella are motile due to flagella, with Serratia typically motile as well. Therefore, the lack of motility points to Klebsiella.

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