Viruses

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Across
  1. 1. Forms the spikes on a virus
  2. 6. How viral envelopes are gained from a host cell.
  3. 9. Virus with single stranded positive sense RNA
  4. 12. An enzyme that transcribes RNA into DNA is called ______ transcriptase.
Down
  1. 2. A bacteriophage that infects E.Coli.
  2. 3. Formed from the membrane of the infected cell from which the virus broke away from
  3. 4. Viruses are not living as they cannot _________ themselves
  4. 5. DNA without ends
  5. 7. Unlike living things, viruses do not _____.
  6. 8. Surrounds the genetic material and made of protein.
  7. 10. Virus with two negative sense RNA strands
  8. 11. Viruses are obligate parasites and require a _______.