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A virus genome may encode all of the following EXCEPT

  • A.envelope glycoproteins
  • B.a polymerase
  • C.ribosomal RNA for its own ribosomes
  • D.capsid proteins

Answer: C

No virus encodes a ribosome; protein synthesis is always borrowed from the host, and that dependence is part of what makes a virus an obligate intracellular parasite. Capsid proteins, glycoproteins and polymerases are all virus-coded.

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