ENTER SUBJECT
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Antibiotics
Part I of Essay
have played a major role in our society thanks to Sir
Alexander Fleming's careful observations in 1928. Without it, many lives
would be in danger due to infectious diseases.
Antibiotics are chemical substances produced by various species of
microorganisms and other l .... Part II of Essay
.... Work ?
Antibiotics can be bacteriostatic (bacteria stopped from multiplying)
or bactericidal (bacteria killed). To perform either of these functions,
antibiotics must be brought into contact with the bacteria.
It is believed that antibiotics interfere with the surface of bacteria
cells, causing a change in their ability to reproduce. Testing the action
of an antibiotic in the laboratory shows how much exposure to the drug is
necessary to halt reproduction or to kill the bacteria. Although a large
amount of an antibiotic tak ....
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Words: 1647 - Pages: 6
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