Sir Alexander Fleming - HERO - Short Question Answers

Lesson 13 Sir Alexander Fleming Patrick Pringle Q.1: What are antiseptics and what is the antiseptic method? Ans: The use of chemical to kill the germs is called antiseptic method. These chemicals are known as antiseptics.   Q.2: What was the chief defect of antiseptic method? Ans: They had toxic effect on leucocytes.   Q.3: What part is played by the white cells in the blood of a human body? Ans: White blood cells are natural defense system which fights against germs.   Q.4: Give an account of the early life of Fleming. Ans: Fleming was born on a farm in a poor family. He went to local school at the age of ten.   Q.5: Describe how Fleming discovered penicillin. Ans: He discovered penicillin by chance when he was growing germs on plates.   Q.6 In what respect is penicillin better than the chemical antiseptics? Ans: Unlike chemical antiseptics, it has toxic effect on germs and not in leucocytes.   Q.7 What do you know of the Oxford team? Ans: The Oxford team with the he