Bacteria And Its Effects On Bacterial Populations

1255 WordsDec 2, 20146 Pages
Often in prokaryotes like bacteria, they contain plasmids which are small double stranded rings of extra DNA. Most of these plasmids contain a small amount of genes which replicated by themselves rather than with the DNA in the cell. These plasmids could be beneficial or a detrimental to the bacteria. For the beneficial side, plasmids contain products for toxins that can go on to make their host immune to that of the toxin along with many infectious diseases have been cured by plasmids as antibiotic resistances. The world today has seen an increase in antibiotic resistance and due to this there is an increase in the amount of antibiotic genes in bacterial populations. When an antibiotic is present in a bacterial cell, they will have an advantage when compared to other bacteria that do not contain the antibiotic which will help them survive better in their respective environments. Antibiotics are defined as “a medicine that inhibits the growth of or destroys microorganisms.” They do this by attacking the structure of the bacteria and destroying it within the body. Destroying the bacteria can come in many different ways though. For one instance, the antibiotic will block the bacteria’s growth and reproduction by preventing the cell to multiply by blocking certain nutrients that the cell would need to divide and reproduce. Another way the antibiotic can fight against the bacteria is by destroying the cell wall of the bacteria causing it to die. These antibiotics can be fought
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