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4 Written Questions

4 Multiple Choice Questions

  1. causes disease in tobacco plants.
  2. bacterial viruses with a polyhedral head & a helical tail.
  3. contains only a nucleic acid.
  4. viral DNA become integrated into the host cell's DNA.

4 True/False Questions

  1. HIVthe virus that causes AIDS.


  2. Virusescontains only a nucleic acid.


  3. clearcutting of forestsis a part of biology because they are active inside living cells.


  4. capsid of a virusis the protective outer coat.


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