question_answer 15)

  Antitrypsin is (a) an antacid                                                                     (b) an enzyme (c) used to treat arthritis                                               (d) used to treat emphysema

Answer:

                  (d) a-antitrypsin is a protease inhibitor that is produced by the introduction of specific sequence of DNA (or genes) which codes for a particular product in the transgenic animals. It is used to treat emphysema as it inhibits the enzymes of inflammatory cells that contributes to the respiratory complications.