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Science Challenge #11

Question 1:
He was born in 1881 in Scotland into a large farming family and is said to have had great intellect, charm, and modesty. He attended medical school in London qualifying as both physician and surgeon but chose instead to focus on microbiology. While studying the effects of mercuric chloride on staphylococcus he noticed that some greenish mold colonies growing on a culture with the colonies of staphylococcus appeared to be affecting them.

  1. What was this scientist's name?
  2. What was the mold that had invaded the petridish of Staphylococcus?
  3. What is the name of the antibacterial substance that can be extracted from this mold?
  4. Which of the following can this antibacterial substance be used to treat: chickenpox, the common cold, influenza, measles?

Which scientist, in 1854 said, "Where observation is concerned, chance favors only the prepared mind." ?

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