Microbiology is the branch of biology that deals with microorganisms and their effect on other living organisms. Microbes are very small organisms which can only be viewed with the aid of microscope. Several groups of organisms that fit into this category are bacteria‚ cyanobacteria‚ fungi and protists. Within this group there are several species interesting to humans because of their ability to cause disease or their use in the food industry and microorganisms can be classified to unicellular and multicellular
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lack a cell wall but instead have a pellicle‚ which maintains its shape. The central area of the cell contains the nucleus‚ which contains the DNA‚ and carries out vital cell activities. Moreover‚ some Euglena species are unique single-celled microorganisms because they have mixed characteristics similar to both plants and animals. Such as plants‚ they are able to prepare and consume food
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them by definition‚ complicit.) To reiterate‚ Connell reminds us that hegemonic masculinity is never any one biologically determined-person or group but a hierarchial position which can be occupied by anyone at any given time. Given the supposedly ubiquity that Connell argues exists for hegemonic masculinity‚ we can see if it ever defined Kate Bornstein prior
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only thing that could survive an incident that could end our known way of life is a roach and a pack or Twinkies. In truth the great survivor would be microorganisms. Microorganisms can survive where most cannot due to their size‚ nutritional needs‚ energy requirements‚ and are very good at adapting to different environments (Black 2008). Microorganisms require two things to live a long healthy life‚ and these are physical and nutritional factors. Physical factors include pH‚ temperature‚ oxygen concentration
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no cellular machinery to protect them from the oxidizing power of oxygen. Organisms that cannot deal with the problems presented by oxygen cannot survive in air and are killed (Anaerobic Organisms Wikipedia). On the basis of oxygen tolerance‚ microorganisms can be placed into four classes. Strict aerobes cannot survive in the absence of oxygen and produce energy only by oxidative phosphorylation.Strict anaerobes‚ in many cases‚ generate energy by fermentation or by anaerobic respiration and are killed
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bacteria. How can these bacteria get on the human body and be problematic? Methods and Materials The design of this lab experiment is to isolate bacteria from any location or item without getting bacterial contamination from unwanted places. Microorganisms are found in dust particles suspended in the air or and on nasal secretions that are a result of sneezing (Department‚ 2009). Materials needed are: 100 ml of melted nutrient agar‚ five sterile petri plates‚ and sterile cotton swabs. The first
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HYDRO-ECOSPHERE Hydro-ecosphere is considered as a more suitable habitat for microorganisms than the atmosphere and lithosphere‚ mainly because hydrosphere contains water‚ which is important in microbial metabolism (Atlas and Bartha‚ 1993). The unique properties of water are also attributes of hydrosphere as a suitable habitat. Due to polarity of water (slightly negative and slightly positive)‚ water is considered as a great solvent‚ capable of forming hydrogen bonding. Large heat
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------------------------------------------------- Noun | 1. | water pollution - pollution of the water in rivers and lakespollution - undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities | ------------------------------------------------- ------------------------------------------------- http://www.thefreedictionary.com/Water+pollutant ------------------------------------------------- -------------------------------------------------
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Germ Theory is the doctrine holding that infectious diseases are caused by the activity of microorganisms within the body which was supported by French Chemist and microbiologist‚ Louis Pasteur (1822-1895). Pasteur invented pasteurization which is the act or process of heating a beverage or other food‚ such as milk or beer‚ to a specific temperature for a specific period of time in order to kill microorganisms and bacteria that could cause disease‚ spoilage‚ or undesired fermentation. One such bacterium
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Blood clotting If microorganisms get into the body through a cut in the skin‚ the most important thing to do is close the wound quickly so that no more microorganisms can enter. A scab does just that. The blood contains tiny structures called platelets‚ and a protein called fibrin. A scab is basically platelets stuck in a fibrin mesh. The animation shows how this works. Mucus The respiratory system is protected in several ways. Nasal hairs keep out dust and larger microorganisms. Sticky mucus traps
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