Bacteria are often maligned as the causes of human and animal disease (like this one‚ Leptospira‚ which causes serious disease in livestock). However‚ certain bacteria‚ the actinomycetes‚ produce antibiotics such as streptomycin and nocardicin; others live symbiotically in the guts of animals (including humans) or elsewhere in their bodies‚ or on the roots of certain plants‚ converting nitrogen into a usable form. Bacteria put the tang in yogurt and the sour in sourdough bread; bacteria help to break
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diseases can kill many people that are drinking water on the tap water and mostly on the drinking fountain; people might drink on a drinking fountain which is dirty because of the different people that are drinking and spiting their saliva on to it‚ bacteria can easily contaminate the water that is coming out from the drinking fountain. Bacteria’s are also found everywhere in the surroundings; even the sink in our home might have bacteria’s because of the dirty place‚ and in the school also have bacteria’s
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The Identification of Two Unknown Species of Bacteria in Tube #72 Introduction: There are many reasons for knowing the identity of microorganisms. The reasons range from knowing the causative agent of a disease in a patient‚ so as to know how it can be treated‚ to knowing the correct microorganism to be used for making certain foods or antibiotics. This study was done by applying all of the methods that have been learned so far in the microbiology laboratory class for the identification of an
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ylococcal bacteria. These bacteria are spread by having direct contact with an infected person‚ by using a contaminated object‚ or by inhaling infected droplets dispersed by sneezing or coughing. Skin infections are common‚ but the bacteria can spread through the bloodstream and infect distant organs. Skin infections may cause blisters‚ abscesses‚ and redness and swelling in the infected area. The diagnosis is based on the appearance of the skin or identification of the bacteria in a
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research scientist with a profitable side practice treating the syphilis infections of prominent London artists‚ was pursuing his pet theory--that his own nasal mucus had antibacterial effects--when he left a culture plate smeared with Staphylococcus bacteria on his lab bench while he went on a two-week holiday. When he returned‚ he noticed a clear halo surrounding the yellow-green growth of a mold that had accidentally contaminated the plate. Unknown to him‚ a spore of a rare variant called Penicillium
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Bacteria Lab Write-Up Jianna Liu P8 Purpose: The purpose of this lab is to find out which substance‚ alcohol‚ antibacterial soap‚ water‚ or hydrogen peroxide‚ is the best at preventing the growth of bacteria. Hypothesis: Antibacterial soap will be the best because soap is a substance that people use to wash their hands because it takes away the germs. Even the name‚ antibacterial soap‚ suggests that it fights off bacteria. Hydrogen peroxide is second because it is used
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observe motility? Carbohydrate Fermentation Testing Questions A. What is fermentation? B. Why is it important not to incubate the fermentation tubes beyond 24 hours? C. Why is phenol red added to the fermentation tubes? D. Why do bacteria have differences in the carbohydrates they can ferment? E. Why does the formation of yellow color indicate fermentation? F. What information can be gained by running a fermentation series on a particular microbe? G. What does a dark pink or red color indicate
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pathogen is a tiny non-visible disease causing microorganism such as Bacteria‚ Virus and Fungus. Both the scientific name and common name for Actinomycosis is Actinomycosis. The pathogens that cause Actinomycosis are from a species of Actinomyces‚ most commonly known as Actinomyces Israelii and Actinomyces Gerencseriae. The species of Actinomyces are an Actinobacteria class of Bacteria. The pathogens are endogenous‚ meaning the bacteria originate from inside the body‚ making them not liable to be transmitted
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Identification and Diagnosis of Unknown Enteric Bacteria in an Infected Patient Using an Enteropluritube Brooke Addario 2/16/2015 BIO 488C - Section J TA – Jacob Karsten Introduction: Enteric bacteria are members of the Enterobacteriaceae family of microorganisms. These gram negative‚ rod shaped‚ facultative anaerobes are found in the intestinal tracts of humans and animals. Enteric bacteria can be pathogenic; however‚ they are also a normal part of human bacterial flora and are therefore
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The purpose of the unknown bacteria lab assignment was to select an unknown bacteria culture and‚ through a series of metabolic tests‚ identify which bacteria genus resided in the pure culture received. A nutrient broth inoculated with bacterial culture (numbered 45‚ henceforth referenced as U45) was selected and a streak plate was made to isolate a pure culture for use throughout the assignment. From the streak plate‚ several slides were made to determine the morphology of unknown 45. A Gram stain
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