Q:

What did Alexander Fleming discover?

A:

Alexander Fleming discovered the antibiotic, penicillin. He found this important substance purely by accident when he observed penicillium mold in a petri dish preventing staphyloccoccus bacteria from growing around the mold.

When he isolated penicillin, Fleming found that the substance killed bacteria but had no effect on animals. Fleming had trouble isolating and producing the substance because it was unstable. Other scientists, such as Ernst Chain and Howard Florey, were able to isolate penicillin and mass produce it for widespread use. The first antibiotic discovered, penicillin kills the dangerous bacteria that causes diseases such as diphtheria, meningitis and strep throat.


Is this answer helpful?

Similar Questions

  • Q:

    What did Robert Brown discover?

    A:

    Robert Brown was a 19th-century botanist who provided one of the earliest detailed descriptions of the cell nucleus. This and other discoveries were due to Brown's pioneering use of the microscope in his research.

    Full Answer >
    Filed Under:
  • Q:

    What did Alexander Mackenzie discover?

    A:

    Alexander Mackenzie was a Scottish explorer who discovered an overland route across Canada to the Pacific Ocean. His crossing in 1792 was the first east-west crossing of the North American continent made by a European north of Mexico, predating the Lewis and Clark expedition by a decade.

    Full Answer >
  • Q:

    Why is Alexander the Great famous?

    A:

    Alexander the Great was a conqueror of the Persian Empire who built up the largest empire of the ancient world. He ruled Macedonia beginning in 336 B.C. after his father's rule ended.

    Full Answer >
    Filed Under:
  • Q:

    Who is Alexander Kerensky?

    A:

    Alexander Kerensky was a moderate socialist who led Russia between July and October, 1917. A lawyer in his private life, Kerensky became the minister of justice for the Russian Provisional Government in the wake of the February Revolution of 1917 that ousted the czar. He became prime minister in July, but his term ended with the rise of the Bolsheviks in the October Revolution just months later.

    Full Answer >
    Filed Under:

Explore