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The protein coat that surrounds a viral genome is the

  • A.envelope
  • B.matrix
  • C.peplomer
  • D.capsid

Answer: D

The capsid is the virus-coded protein shell enclosing the nucleic acid, and the two together are called the nucleocapsid. The envelope is a lipid layer outside that, present only in some families, and peplomers are the glycoprotein spikes projecting from it.

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