The first antibiotic, penicillin, was made because of the properties found in mold. Alexander Fleming discovered penicillin in 1928 and the drug was found to greatly improve the quality of life in people at that time.
Sir Alexander Fleming, in September 1928, to be exact.
The Alexander Fleming, while looking for an antibiotic, failed to clean some of his glassware adequately. It went down in history as one of those "happy accidents" when he noticed something on a not-so-clean petri dish had the properties he was searching for. Namely, suppression of the growth of certain kinds of bacteria.
Mendeleev was able to predict the properties of the elements that were not discovered at that time. He left gaps for these elements in his Periodic Table.
Pythagoras discovered the properties of string length, and that certain ratios of string length are more pleasing to the human ear. The ration is 3:2.
An antibiotic used to treat certain bacterial infections.
True.
Penicillin is the first antibiotic to be used in practice in 1939. Sulphonamide is 'not' the antibiotic. It is chemical produced in laboratory. Also called as antibacterial chemotherapeutic agent.
The treatment of a certain illness with an antibiotic that is not yet proven to work for this illness scientifically, but had been proven practically (ie by experience!)
Flourine and Cholrine have similar properties because they have the same number of electrons in outmost shell (7). Each group has similar properties because their amount of valence electrons (electrons in the outmost shell) can only support bonding with certain elements.
They are the properties that are unique to certain minerals such as flourescence or radioactivity
They are the properties that are unique to certain minerals such as flourescence or radioactivity
If you overuse it then when you really need it, it won't work. The reason is that your doctor should do a culture, like a throat swab, and run a sensitivity test to see if an antibiotic is needed and which one will affect the microbe. You want to hit the microbe with accuracy and not with a "shot-gun". When treating the microbe with the right drug, the persons' normal flora will not become resistant to that antibiotic. I get really upset if a culture and sensitivity isn't done because the antibiotic may be needed to knock a microbe out and now it will not work at all or have to be given higher doses.