Question

Alexander Fleming was a biologist who was best known for his discovery of the antibiotic penicillin. During his research, Dr. Fleming noticed that there was no bacterial growth where there was mold growing on his petri dishes. He could have thrown out his plates, but instead he cultured the mold. How did Dr. Fleming’s creativity lead to a scientific discovery?

a)He noticed that bacteria cells and mold coexisted well.
b)He observed that bacterial cells had become mold.
c)He concluded that the mold inhibited the growth of bacteria.
d)He inferred that mold and bacteria share most of their DNA.

Answer 1

C.) He concluded that the mold inhibited the growth of bacteria 

Answer 2

Answer: c) He concluded that the mold inhibited the growth of bacteria.

Alexander Fleming was a doctor in Scotland. He discovered penicillin and received a Nobel Prize in 1945. Flemming noticed a culture of bacteria in his laboratory belonging to strain of Staphylococcus aureus, he found that the culture was contaminated with a mold of fungi. He discovered that the colonies of bacteria surrounded by this mold has been destroyed. He pointed out that this mold has clinical potential. Fleming and his team isolated and purified this mold, later named as Penicillin. This was used as an antibiotic during the World War II, as a medicine to prevent the bacterial infection in wounds.