Escherichia coli Essays

  • Lab Report: Citrobacter Aerogenes, Staphyloccus

    513 Words  | 3 Pages

    Enterococcus durans, and Escherichia coli. Citrobacter freundii is a Gram-negative rod shape bacteria. The MSA plate will grow Citrobacter freundii, Bacillus subtillis, Enterobacter aerogenes and will have a yellow color change while Staphylococcus epidermis will not grow nor have a color change to yellow. The MacConkey agar will have growth with Escherichia coli, Enterococcus durans, but not Staphylococcus epidermis and Bacillus subtilis since it is a Gram-positive. Only Escherichia coli and Enterococcus

  • E. Coli Research Paper

    1004 Words  | 5 Pages

    Escherichia Coli 0157:H7 This paper will specialize on a specific type of bacterial foodborne illness caused by the bacteria Escherichia Coli. E. coli was discovered by Theodore von Escherich in 1885. E.coli is a natural found bacteria that lies throughout the intestinal tract of warm blooded animals and comes in many forms only one of which is deadly. This form is E. coli 0157:H7 which can be caused by direct exposure to fecal matter to kill this rouge E.coli the contaminated material must be cooked

  • Enterobacteria Case Study

    719 Words  | 3 Pages

    Serratia: Serratia’s a group of gram (-negative), facultative anaerobic, rod-shaped bacteria of the Enterobacteriaceae family. Serratia are most common and pathogenic of the species within the genus, S. marcescens, is often the sole infective agent and frequently causes health facility infections. S. marcescens is often found in showers, bathroom bowls, and around wetted tiles. The bacterium is associate timeserving, human infective agent, capitalizing on its ability to make integrated surface communities

  • E. Coli Case Study

    955 Words  | 4 Pages

    “STUDY OF VIRULENCE FACTORS AND ANTIBIOTIC SENSITIVITY PATTERN IN ESCHERICHIA COLI STRAINS ISOLATED FROM EXTRAINTESTINAL INFECTIONS” INTRODUCTION Escherichia coli (E. coli) is one of the most important members of the family Enterobacteriaceae and a commensal in the human intestinal tract. (1) As a commensal it contributes to the maintenance of health of a person. However, E.coli when enters into unnatural sites, can cause variety of conditions such as urinary tract infections, wound infections,

  • Mad Cow Disease Essay

    739 Words  | 3 Pages

    Worldwide the number of beef cattle being slaughtered who were contaminated with strains of E. Coli ranged from 2.1 to 70.1% (Clark). Diseases that can infect humans have been manifesting within the beef cattle industry for decade resulting in thousands of deaths for humans. Two of more common infections include E. Coli and Mad Cow Disease both of which are consequences of how cattle are raised and treatment in factory farms. Because of the lack of procedures being followed and standards being upheld

  • Trp Operon Research Paper

    964 Words  | 4 Pages

    trp and ara operon trp operon: The trp operon is a group of genes that are used, or transcribed, together that codes for the components for production of tryptophan. The trp operon is present in many bacteria, but was first characterized in Escherichia coli. The operon is regulated so that when tryptophan synthesis are not expressed. It was an important experimental system for learning about gene regulation, and is commonly used to teach gene regulation. Discovered in 1953 by Jacques Monod and

  • Pathogenic Bacteria Research Paper

    1409 Words  | 6 Pages

    palm (Phoenix dactylifera) plants were purchased from local market in Duba province, west Saudi Arabia were assayed for the in vitro antibacterial activity against three human pathogenic bacteria viz Klebsiella pneumoniae, Psuedomonas sp, and Escherichia coli using hole plate diffusion method. The result revealed that some ethanolic and hot water extracts had shown antibacterial activities against the three bacterial strains under investigation. Key words: plant extracts, coffee, black cumin, date

  • Pglo Lab

    1396 Words  | 6 Pages

    to agriculture. In this lab we will be inserting a gene into an Escherichia coli bacteria with the help of a plasmid. Escherichia coli bacteria also known as E. coli, is a bacterium that is rod shaped and contains flagella to help it move. The bacterial DNA is circular inside of an E. coli bacterium. E coli. is most known for being found in the intestine of humans and animals but it can also be found in other places such as food

  • NURS 6501 Discussion Paper

    941 Words  | 4 Pages

    is typically caused by Escherichia coli (E. coli) or Staphylococcus

  • How Does Ampicillin Affect Bacteria

    293 Words  | 2 Pages

    Escherichia coli (E. coli) is normally found in living intestine of humans and animals. A bacterium that are harmless and is important to the health of the human’s intestinal tract. The intestinal tract is part of the digestive system; having varies of sizes of intestine that transport the food in order to absorb the nutrients and expel the waste. However, some E. coli are pathogenic, causing illness to the host such as diarrhea or harm the outside of the intestinal tract. The host can be effected

  • Cranberry Research Paper

    1073 Words  | 5 Pages

    removed the person must get a prescription from a doctor for an antibiotic. Deficiencies and Causes An infection usually occurs when the bacteria, Escherichia coli (E. coli), gets into the urine and begins to grow. The infection starts at the opening of the urethra where the urine leaves and moves upward into the urinary tract where it begins. E. coli lives in the colon and around the anus where it is then moved to the urethra. The bacteria travel up the urethra into the bladder, where the infection

  • Pathogenic Bacteria In Fish

    1614 Words  | 7 Pages

    Contamination with pathogenic bacteria from the human/animal reservoir can occur when the landing place is unhygienic or when the fish are washed with contaminated water. Upon the processing of fish, its exposure to water is a critical part as pathogens may be present in the water used which can cause contamination and spoilage (Shoolongela & Schneider, 2012). Contamination of food can occur because of problems in food production, preparation, storage or cooking. The aquatic environment and soft

  • Foodborne Diseases Essay

    779 Words  | 4 Pages

    dengue and tuberculosis which is 62.5 cases per 100,000 population in 2008. The example of foodborne disease is Botalism, Campylobacteriosis, E.coli, Hepatitis A., Norovirus Infection, Salmonellosis, Shigellosis and others. E. coli E. coli are known as Escherichia coli which is a bacteria are usually can be found as part of the normal gut flora in the large intestines of mammals such as cows and sheep. There are certainly some deadly strains in its ranks. But most E.coli are harmless. Billions

  • Sample Lab Report

    488 Words  | 2 Pages

    Major unknown #202 was given out by the instructor, and the unknown bacterium was streaked out on a Trypticase Soy Agar tube and plate to inoculating the bacterium and incubating. After incubated and grown the morphology was observed and several Gram stains were performed to determinate if the bacterium were gram positive or negative, and the morphology of the bacterium. The Gram Stain of my major unknown #202 was determinate to be Gram negative bacilli, and was double checked by the Gram check slide

  • Personal Statement Essay: My Role In Science Olympiad

    787 Words  | 4 Pages

    The putrid smell of Escherichia coli is one that is immediately identifiable to the few lucky individuals who recognize its scent. It is also an aroma with which I became intimately sensitive to as I shuttled petri dishes of the bacterium in and out of an incubator. While my classmates shied away from the task of handling the pungent bacteria used in our recombinant DNA experiments, I took to the task eagerly, anything that would take me one step closer to my goal of researching. I had the opportunity

  • Dilution Series Lab Report

    739 Words  | 3 Pages

    that some of the colonies have turned pink in colour. What information does this tell you about the bacteria in the sample, and why did the colony change colour? [2 marks] This tells me that the bacteria in the sample contains coliforms such as Escherichia coli (E.coli). The colonies changed colour as the enzymes produced by the bacterial cells reacted with the red galactosidase in the agar medium, this reaction causes the colonies to turn pink making them easily

  • Bacterial Conjunctivitis Essay

    1668 Words  | 7 Pages

    ABSTRACT Bacterial conjunctivitis occurs in persons of all races, although differences in frequencies may be reflected by geographical variations of pathogen prevalence.The study was therefore taken up to detect the prevalence of bacterial and fungal pathogens causing occular infections and to study their antibiotic resistant profiles. A total of 44 kerato-conjunctivitis samples were collected, out of which, 31/44 (73%) were fungal isolates . The prevalence of fungal isolates was as follows- 7

  • Horizontal Gene Transfer In Eukaryotic Analysis

    518 Words  | 3 Pages

    coli was used in this experiment due to its versatility and usefulness in biological research. E. coli have been used for a long period of time as the subject organism in many biology experiments, making it one the most understand organism. Additionally, E. coli is relatively harmless to the researchers because it is naturally found in the intestines of humans. Furthermore, it has a very fast growth rate, capable of doubling its population every 20 minutes (Lee, 1996). E. coli also contains

  • Unknown Bacteria

    557 Words  | 3 Pages

    Salmonella enterica and Yersinia enterocolitica are both paracolons, which lack the ability to ferment lactose. Conversely, Klebsiella pneumoniae and Escherichia coli are both coliforms, which are able to ferment lactose. Of the Enterobacteriaceae family, there are genera that are in the normal human flora. Some species such as K. pneumoniae and E. coli are opportunistic pathogens which can capitalize on weakened host defenses and cause food poisoning (Baron, 1996). S. enterica secrete proteins that

  • Bifidobacteria Case Study

    1353 Words  | 6 Pages

    isolated from infant feces to inhibit enterohemorrhagic Escherichia coli serotype O157:H7 in-vitro to bifidobacterial reference strains collected from American Type Culture Collection (ATCC). Bifidobacteria reduced its adhesion to human enterocyte-like Caco-2 cells. He used the carbohydrate fermentation patterns to carry out agar spot technique, resistance to lysozyme, acid, bile and hydrogen peroxide as well as their ability to inhibit E. coli O157:H7. Five Bifidobacterium isolates were identified