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The nucleocapsid of a virus is

  • A.the capsid with the nucleic acid inside
  • B.the envelope together with its spikes
  • C.the nucleic acid alone
  • D.the capsid alone

Answer: A

Nucleocapsid names the genome and its protein coat as one structure. In a naked virus that is the whole particle; in an enveloped virus it is what lies inside the lipid layer, and it may be helical even when the particle looks roughly spherical.

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