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Salmonella typhi has which type of flagella arrangement?

  • A.Amphitrichous
  • B.Peritrichous
  • C.Monotrichous
  • D.Lophotrichous

Answer: B

Correct answer: Peritrichous

Salmonella, like E. coli and Proteus, is peritrichous: flagella all over the cell. When they all rotate counter-clockwise they gather into one bundle and the cell runs straight; when one reverses, the bundle breaks up and the cell tumbles into a new direction.

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