What are bacteria?

May 20th, 2015
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Bacteria are microscopic living organisms, usually one-celled, that can be found everywhere. They can be dangerous, such as when they cause infection, or beneficial, as in the process of fermentation (such as in wine) and that of decomposition.

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Buenaventura, Ma. Catherine P.BS-Accountancy IIWhat are bacteria?Bacteria are microscopic living organisms, usually one-celled, that can be found everywhere. They can be dangerous, such as when they cause infection, or beneficial, as in the process of fermentation (such as in wine) and that of decomposition.In 1676, Anton Van Leeuwenhoek first observed bacteria through a microscope and called them animalcules. In 1838, the German Naturalist Christian Gottfried Ehrenberg called them bacteria, from the Greek baktria, meaning "little stick." An apt word, as the first observed bacteria were shaped like rods, although bacteria can also be spiral or spherical in shape. A grammar note: The word bacteria is the plural form of "bacterium" and so should be written as plural, as in "Many bacteria are harmless."Bacteria are found everywhere - in air, water, soil, animals, people, and food. They are very small living things. It takes one million to cover a pinhead, so you need to look at them through a microscope.Some bacteria are useful to us.Bacteria can be used to make food like cheese and yoghurtBacteria can be used to make medicines.Bacteria help us to digest our food.A bacterium is a living cell consisting of a fluid called cytoplasm enclosed by a cell membrane and cell wall. A bacterium contains DNA in the cytoplasm in the form of a chromosome. Although a bacterium only has one chromosome it can have other, smaller DNA elements called plasmids. The chromosome

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