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Specific binding of a virion protein to a molecule on the cell surface is

  • A.penetration
  • B.uncoating
  • C.assembly
  • D.attachment

Answer: D

Attachment is a specific recognition event between a viral anti-receptor and a host cell constituent, which is why a virus infects only cells carrying the right molecule. Penetration is the entry that follows, and uncoating the release of the genome after that.

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