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4 Written questions

4 Multiple choice questions

  1. contain RNA or DNA in a protein coat.
  2. viruses that infect a host cell & have their nucleic acid replicated but don't harm the host cell.
  3. is most closely associated with emerging viruses.
  4. contains only a nucleic acid.

4 True/False questions

  1. the study of virusesis a part of biology because they are active inside living cells.


  2. bacteriophagesbacterial viruses with a polyhedral head & a helical tail.


  3. typical viruscauses disease in tobacco plants.


  4. Virusescontains only a nucleic acid.


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