What are bacteria? Bacteria are very different from viruses. First of all‚ bacteria are much larger in size. The largest virus is only as big as the very smallest bacterium (singular for bacteria). But bacteria are still microscopic and cannot be seen with the naked eye. They are so small that the sizes of bacteria are measured in micrometers (10‚000 micrometers = 1 centimeter). By comparison‚ the head of a pin is about 1000 micrometers wide. Though more complex than a virus‚ the structure of a
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effective in killing bacteria‚ fungus‚ and viruses. Household bleach works quickly and is widely available at a low cost. The disadvantage is could irritates mucous membranes‚ the skin‚ and the airway. It also decomposes under heat or light and reacts readily with other chemicals. Bleach solutions begin to lose its effectiveness after 2 hours. You will need to make a fresh solution for each experiment. The advantage of the 70% alcohol mixtures is capable of killing most bacteria within 5 minutes of
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bacilli tested in clinical settings from stool specimens. The tests detect the presence of disease causing pathogens of E. coli that produce Shiga toxins. E. coli bacteria commonly occur in nature and they are a necessary component of the digestive process in humans and most other mammals. Most strains of E. coli are harmless‚ but pathogenic E. coli can be responsible for inflammation of the stomach and intestines. To destroy E. coli the contaminated
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Waterborne diseases are often caused by parasites which are directly transmitted through consuming contaminated drinking water. Any water reserve‚ infested with pathogenic parasites‚ used in the preparation of food can be considered as a source of foodborne disease and could be easily transmitted through consumption of the same pathogenic parasites. These diseases commonly affect the digestive tract as well as the other vital parts of the body that may be fatal to anyone especially those who are immunocompromised
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Gut bacteria Gut bacteria are bacteria that are located in the gut. The gut is considered as any part of the gastrointestinal tract. The gastrointestinal tract includes the stomach‚ mouth‚ oesophagus‚ and duodenum. The gastrointestinal track has many different parts and each part contains different bacteria.There are 100 trillion bacteria present in the human body‚ most of them can be found within the gut and others can be found in the mouth‚ skin surface‚ urogenital tract and nose. Its structure
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30 February 2014 Antibiotic Resistant Bacteria: What is it‚ how to prevent it and who it affects? In the United States alone‚ about 23‚000 people die from antibiotic resistant infections yearly. It is also one of the top 15 most dangerous illnesses in the country (United States House of Representatives). Antibiotic resistance is when bacteria develops a different response to an antibiotic that is its ancestor bacteria. Slight changes in bacteria enable the antibiotic to work and successfully
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Protecting Against Macro Viruses Marques Tate Rasmussen College This paper is being submitted on February 23‚ 2014‚ for Tina Grezinski’s D181 Excel course. Protecting Against Macro Viruses Many applications‚ such as Microsoft Excel and Word‚ support macro languages. A macro virus attacks these kinds of applications‚ infecting the documents and template files. So if your computer has a macro virus‚ and you use a word template file to make a new document‚ it ’ll also become infected
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Lactic Acid Bacteria Amanda Perry Many persons are oblivious to the fact that when they consume certain delicious food products like yogurt‚ buttermilk or cheese‚ they are actually eating live bacterial biomass which has acidified the milk content and contains a mixture of bacterial slime layers. Perhaps it is a blessing that most people are unaware because when most hear the word ‘bacteria‚’ their first thought is of a microscopic unicellular organism that causes various types of diseases especially
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Prokaryotes: Bacteria Most of us have been conditioned to think of bacteria as invisible‚ potentially harmful little creatures. Actually‚ relatively few species of bacteria cause disease in humans‚ animals‚ plants‚ or any other organisms. In fact‚ all organisms made up of eukaryotic cells probably evolved from bacteria-like organisms‚ which were some of the earliest forms of life. In this chapter‚ we will learn how bacterial groups are differentiated from each other and how important bacteria are in
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Villarreal‚ Luis P. “Are Viruses Alive?” Scientific American‚ December 2004. In the article “Are Viruses Alive?‚” Luis P. Villarreal discusses the effects of viruses on life‚ while presenting different angles as to whether or not they are alive themselves and arguing about the impact viruses have had on evolution. Through a deeper understanding of viruses and their functions‚ the scientific community may come to fully appreciate viruses‚ whether they are living or non-living in themselves‚ as significant
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