Machine-translated by Google. Questions are authored in English.
Top

Discussion

A plus-sense single-stranded RNA genome is distinguished by the fact that it

  • A.is always double stranded inside the capsid
  • B.is transcribed by reverse transcriptase
  • C.can act directly as messenger RNA
  • D.must be copied before it can be translated

Answer: C

Plus-sense RNA reads in the same direction as mRNA, so a ribosome can translate the genome as soon as it reaches the cytoplasm and the naked nucleic acid alone is infectious. Minus-sense RNA reads the opposite way and must first be copied, which is why such viruses carry their own polymerase.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.