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During budding, the viral glycoproteins are

  • A.taken unchanged from the host cell surface
  • B.left behind inside the cytoplasm
  • C.inserted into the host membrane before the particle leaves
  • D.synthesised after the particle has left the cell

Answer: C

Virus-encoded glycoproteins are processed through the cell's membrane pathway and placed in the patch of membrane that the nucleocapsid then buds through, so the finished envelope carries viral spikes in host lipid. That mixed origin is exactly what the envelope is.

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