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Binary fission is a means of reproduction used by

  • A.viruses but not bacteria
  • B.both bacteria and viruses
  • C.neither bacteria nor viruses
  • D.bacteria but not viruses

Answer: D

Bacteria divide in two, growing steadily until they split. A virus does not divide at all: its parts are made separately inside the host cell and then assembled, so the number of particles rises in a burst rather than by doubling.

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