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Q: Why did Alexander Fleming leave the lid off his petri dish?
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Why did Alexander Fleming invent penisilin?

Rosalia invented penisilin!!!!!!! nobody invented penicillin, it was discovered by Alexander Fleming growing in a petri dish when he noticed that it killed bacteria growing in the dish.


Who invented the antibiotic Penicillium?

Alexander Fleming invited the antiobiotic called Penicillium in the year 1928. Alexander Fleming was a bacteriologist and made the discovery of Penicillium by chance from a contaminated Petri dish.


Why didn't Alexander Fleming see the mold spore fall into his Petri dish?

Mold spores are extremely tiny, about the size of dust particles. They exist just about everywhere -- you are most likely breathing in a few of them into your lungs right this second. It just so happens that a few penicillum mold spores got into Fleming's petri dish; who knows how or when.


When and who created penicillin?

It wasn't really an invention; it was more of an accidental discovery. Alexander Fleming is credited with the discovery. On September 28, 1928, he noticed that a Petri dish that was accidentally left open got moldy, and there was an area around the mold where the culture in the dish would not grow. However, others had written about the antibacterial properties of Penicillium before Fleming.


Who discovered Penicillin after noticing some mold accidentally dropped into a petri dish prevented the growth of bacteria around it?

It blew in through the window, the source wasn't known.


How was pencillium found?

In 1928, bacteriologist Alexander Fleming made a chance discovery from an already discarded, contaminated Petri dish. The mold that had contaminated the experiment turned out to contain a powerful antibiotic, penicillin. However, though Fleming was credited with the discovery, it was over a decade before someone else turned penicillin into the miracle drug for the 20th century. How did this Petri dish almost get cleaned before being noticed? How did the mold get onto the dish? Who transformed penicillin into a useful drug?


What are some unintended events that turned out positive?

Alexander Fleming unintentionally discovered Penicillin when he found an uncovered petri dish of Staphylococcus bacteria. Many of the bacteria were killed by the mold culture on the dish. This mold was discovered to be able to effective against several diseases.


Where do you put a pitri dish?

It's spelled, "Petri", and you put a petri dish on a level surface, otherwise the growth medium might spill out. The level surface could be a sterile box, a regrigerator, or just on a work counter. Then, if you dropped bread crumbs on the bacteria growing in your petri dish, and if those bread crumbs happened to have a little blue bread mold on them, and you noticed that the bread mold killed the bacteria, then your name might be Alexander Fleming, who is credited with discovering antibiotics.


What is a two-piece glass or plastic dish used for growing bacteria or mold?

A "petri dish"


Did Alexander Fleming do bad?

Alexander Fleming discovered penicillin, he left it in a petri dish for 2 weeks whilst he was on holiday when the got back there was a ring shape of mould, he then tested it on 8 mice and 4 were given penicillin they lived, four weren't and they died! To me this answer is good as it helped four mice survive, it also helped soldiers get better in world war 1!


A shallow glass container used to prepare cultures in science lab?

beakercould be a petri dish


How do you use an petri dish?

a petri dish is used to study small things