LYCOS RETRIEVER 
Viruses (Living Thing): Bacteria
built 256 days ago
Viruses (Living Thing) also shows up in the Retriever categories:
Viruses (Malicious Software) , and more.
Viruses (Malicious Software) , and more.
Some varieties of viruses attack only bacteria. These types are called bacteriophages. The bacteriophage lands on the bacterium and cuts a hole in the cell wall with its 'injection tube'. It then injects its genetic material into the bacterium. These inserted viral genes take over the bacterium's genetic machinery, and tell the bacterium to begin making new virus parts. These parts come together to make whole new viruses inside the bacterium.
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There are many kinds of viruses, some of them are fancy and some are very simple. The ones that infect bacteria are called bacteriophage (meaning bacteria eaters). They are often quite complex and may have many different proteins to help them get their genetic material (nucleic acid) past the thick bacterial cell wall and into the cell. Some of them have a protein in their stalk which can contract, just like the protein myosin in your muscles. The contraction of the stalk then acts like a syringe to inject the viral DNA into the host bacterial cell. Viruses and virus like particles called episomes are responsible for transferring antibiotic resistance from one bacterium to another.
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Biology is the study of living things, from the smallest bacteria and viruses to the interactions of many organisms in whole ecosystems. The TRU Biology program provides a well-rounded education in Ecology, Plant and Animal Biology, Conservation Biology and Wildlife Biology, Microbiology, Genetics, and Physiology. A B.Sc. in Biology provides skills for problem solving, life-long learning and flexibility in future career options.
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Although a few chemicals can disable viruses, antibiotics have no effect on these ultimate parasites. In fact, treating a viral infection with antibiotics kills beneficial bacteria that aid in digestion, while selectively breeding for stronger detrimental bacteria. Sometimes the "smallest flea" wins.
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