[Campbell Biology P.454] Which of the following statements about viral envelopes is correct? | Practice Question

Which of the following statements about viral envelopes is correct?

  • A: Viral envelopes are always directly synthesized by viral genes.
  • B: The viral envelope is primarily composed of host cell membrane and viral glycoproteins.
  • C: All animal viruses possess an envelope.
  • D: Herpesviruses acquire their envelope solely from the host cell's plasma membrane.

Explanation

The text states that the viral envelope is usually derived from the host cell's plasma membrane and that viral glycoproteins specified by viral genes protrude from its surface. Therefore, it is composed of host membrane and viral glycoproteins. Options A, C, and D are incorrect based on the provided text.