by the emergence of Shiga toxin-producing Escherichia coli (Callaway et al.‚ 2013). Specifically‚ Shiga toxin-producing E. coli O157 is a foodborne pathogen of significant public health importance. It can cause mild to bloody diarrhea in humans which may progress to hemolytic uremic syndrome (Centers for Disease Control and Prevention‚ 1993; Hussein‚ 2007) that can be fatal in children‚ the elderly and immunocompromised individuals. E. coli O157 is also responsible for an estimated 63‚153 illnesses
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Staphylococcus Aureus (Staph Aureus) is a gram-positive coccal bacterium and is a member of the Firmicutes phylum. It is most commonly found in the respiratory tract or in skin infections and can sometimes occur from food poisoning. This bacterium is very common and can be found in almost all parts of the world. Every year around 500‚000 people in the USA go to the hospital to get treated (National Institutes of Health‚ 1999). Staph Aureus has genetically developed to resist many antibiotics (Larsen
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data on the growth of Escherichia coli (E. coli) and to monitor how it grows under certain conditions. It has been demonstrated that the levels of glucose and dissolved oxygen were found to affect the rate of growth of E. coli proportionally with a lack of oxygen resulting in the lowering of the pH. In this experiment the growth of E. coli was studied at constant temperature (37 0C) at which it grows ideally. Experimental results for the growth of Escherichia coli showed good agreement with theory
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Staphylococcus epidermidis is one of the most prevalent microorganisms found on the human skin and in the mucous membranes‚ however‚ it is a typically overlooked bacterium because there is very little that is known about it. Though it is not as aggressive as its cousin Staphylococcus aureus‚ Staphylococcus epidermidis is the most frequent cause for nosocomial pathogens‚ especially among newborns‚ the elderly‚ and anyone who has a compromised immune system. These infections are usually associated
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Delgrosso 1 Biology and Society 12/02/13 In the present day there exists two species of elephants. These two species have many relatives that have come before them and died out. Several of these species are Paleomastodon‚ Deinotherium‚ Gompotherium‚ Primelephas which is a direct ancestor to the modern day elephant‚ Stegadon‚ American mastodon‚ and wooly mammoth. All of these species are considered Proboscidea which are mammals that have trunks “proboscidea encompasses the trunked mammals”
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The Effect of Acetyltransferases on 2 different strains of E. coli Introduction Scientists have recently discovered that resistance to antibiotics may not be such a new thing. Evidence of bacteria samples in Canadian permafrost proposes that these resistances have been around for at least 30‚000 years (Luiggi 2011). In our required pre-lab reading‚ we learned tuberculosis is becoming increasingly drug-resistant‚ giving proof that bacteria can adapt to necessary changes in order to survive (Barry
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Foodborne Illness – Staphylococcus • What is the infectious agent (pathogen) that causes this infectious disease? Staphylococcus is an unmodifiable bacterium that causes Botulism. Which mean that individuals have no control over catching or not catching this disease. Since botulism is such strong and dangerous bacteria‚ that ingesting the smallest amount can make individuals sick. More important is other living forms or life like bacteria’s are changing‚ and becoming resistant to the
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This report required the successful identification of two unknown substances through experimental testing on a selective collection of materials and equipment. For the first substance (which will be either tin or aluminium)‚ two tests shall be done to ensure a decisive and educated decision onto what the substance is. The first step utilizes the dramatic difference in density between the two substances by measuring the volume and mass of the unknown substance. By calculating the volume (through displacement
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Research Question: E. coli strain MM294 is placed under different sound frequencies. Does sound frequency affect the growth of E. coli strain MM294? Background: Noise pollution is a problem in urban areas and can be the cause of several health issues and increase risks of disease. It is interesting that even something inanimate like sound could affect so much of biological processes. The movement of energy through matter produces sound. Sound is a mechanical wave that travels
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Lab Section 6 E. Coli Genetic Transformation with pGLO Plasmid Introduction: Genetic transformation is where one organism takes on a characteristic from another organism (Bacterial Transformation 2013). For this experiment we used the bacteria E. Coli to take in foreign jellyfish DNA which will allow it to change genetic material. This experiment determines the effects that the plasmid pGLO has in transferring the Green Florescent Protein found in a jellyfish into the bacteria. It determines
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