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Beginning of Paper
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The Effects of Antibiotics on Bacterial Growth
Bacteria are the most common and ancient microorganisms on earth. Most
bacteria are microscopic, measuring 1 micron in length. However, colonies of
bacteria grown in a laboratory petri dish can be seen with the unaided eye.
There are many divisions and classification ....
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Middle of Paper
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.... follows: the bacteria are stained with a
violet dye and treated with Gram’s solution (1 part iodine, 2 parts potassium
iodide, and 300 parts water). Ethyl alcohol is then applied to the medium; the
bacteria will either preserve the blue color of the original dye or they will
obtain a red hue. The blue colored bacteria are gram-positive; the red bacteria
are identified as gram-negative.
Bacteria contain DNA (deoxyribonucleic acid) just like all cells.
However, in bacteria the DNA is arranged in a circular fashion rather than in
strands. Bacteria also con ....
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