Which of the following bacteria are thick rigid and spiral______________?
Correct answer: B. Spirillum
- A. Vibrio
- B. Spirillum
- C. Spirochete
- D. Coccus
Explanation
Spirilla are rigid, thick-walled, spiral-shaped bacteria and usually move with polar flagella. Spirochetes are also spiral but are thin and flexible, which is why they are the likely alternative distractor.
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