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4 Written questions

4 Multiple choice questions

  1. is most closely associated with emerging viruses.
  2. the virus that causes AIDS.
  3. is the protective outer coat.
  4. viral DNA become integrated into the host cell's DNA.

4 True/False questions

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


  2. viroidcontains only a nucleic acid.


  3. virusescontain RNA or DNA in a protein coat.


  4. bacteriophagescauses disease in tobacco plants.