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4 Written questions

4 Multiple choice questions

  1. contain RNA or DNA in a protein coat.
  2. bacterial viruses with a polyhedral head & a helical tail.
  3. causes disease in tobacco plants.
  4. the virus that causes AIDS.

4 True/False questions

  1. lysogeniccontains only a nucleic acid.


  2. typical virusconsists of a protein coat & a nucleic acid core.


  3. viroidcontains only a nucleic acid.


  4. lytic cycleviruses that infect a host cell & have their nucleic acid replicated but don't harm the host cell.


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