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6. Who solved this problem by developing a dosed inhaler?

  • Robert Koch
  • Dr John Snow
  • Alexander Fleming
  • Louis Pasteur
  • Kaiser Wilhelm

7. Who developed blood groups in 1901?

  • Ignaz Semmelweiss
  • Richard Lewisohn
  • Karl Landsteiner
  • Carl Koller
  • Harry Landster

8. Why was this development of blood groups so important?

  • It made doctors happy so they helped more people
  • It stopped people doing silly things to need surgery, because they did not want other peoples blood
  • It made surgery possible as blood could be replaced without clotting due to incompatible bloodtypes
  • It stopped blood curdling
  • It saved time during surgery