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3 Written questions

3 Multiple choice questions

  1. the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria
  2. an organism that cannot grow in the presence of oxygen
  3. the act of making or becoming a single unit, In bacteria, the direct transfer of DNA between two cells that are temporarily joined.

2 True/False questions

  1. toxina poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species

          

  2. obligate aerobean organism that cannot grow in the presence of oxygen