Which genus is typically nonmotile among common gram-negative enteric bacteria?

Study for your Microbiology exam with engaging quizzes and comprehensive questions. Review essential concepts in Clinical Laboratory Science to ensure your success. Get ready for your exam!

Multiple Choice

Which genus is typically nonmotile among common gram-negative enteric bacteria?

Explanation:
Motility varies among gram-negative enteric bacteria, with many possessing flagella and being motile. Klebsiella species, including Klebsiella oxytoca, are typically nonmotile because they lack flagella. In the lab, they show no movement in motility tests and often form smooth, sometimes mucoid colonies due to a thick capsule. This nonmotile trait helps distinguish them from other common enteric genera like Enterobacter, Morganella, and Providencia, which are motile. So, Klebsiella oxytoca is the genus typically nonmotile.

Motility varies among gram-negative enteric bacteria, with many possessing flagella and being motile. Klebsiella species, including Klebsiella oxytoca, are typically nonmotile because they lack flagella. In the lab, they show no movement in motility tests and often form smooth, sometimes mucoid colonies due to a thick capsule. This nonmotile trait helps distinguish them from other common enteric genera like Enterobacter, Morganella, and Providencia, which are motile. So, Klebsiella oxytoca is the genus typically nonmotile.

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy