Questions: Rigid bacteria with a helical cell shape are called Multiple Choice coccobacilli spirilla vibrios spirochetes

Rigid bacteria with a helical cell shape are called Multiple Choice coccobacilli spirilla vibrios spirochetes
Transcript text: Rigid bacteria with a helical cell shape are called $\qquad$ Multiple Choice coccobacilli spirilla vibrios spirochetes
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Solution

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The answer is the second one (or B): spirilla.

Explanation for each option:

  • Coccobacilli: These are bacteria that are oval and similar in shape to both cocci (spherical bacteria) and bacilli (rod-shaped bacteria). They are not helical in shape.
  • Spirilla: These are rigid bacteria with a helical or spiral shape. They are characterized by their twisted form and rigid structure.
  • Vibrios: These bacteria are comma-shaped or curved rods, not helical.
  • Spirochetes: These are also helical bacteria, but they are flexible, unlike spirilla which are rigid.

Summary: Rigid bacteria with a helical cell shape are called spirilla.

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