E. coli

The purpose of the Unknown Project is to help microbiology students learn to identify an unknown bacterium in a mixed culture by performing different types of tests in a lab. The student must be familiar with the tests and should be able to analyze and interpret the results. Based on the results attained, an organism may be proposed. But what is a mixed culture? A mixed culture contains either two or more different types of identified microorganisms in a container, like a test tube for example. The

This was seen in both trial A and B, where the plates exhibited no growth (Table 1, Table 2). The lack of plasmid in the presence of the ampicillin, makes the growth of bacteria impossible because the ampicillin destroyed the E. coli cells by breaking down their cell walls (How do Antibiotics..., 2006). The bacteria had no added substance which would make them resistant to the ampicillin (Edvotek, 2014). Since no growth occurred on either plate, the transformation efficiency was

Transformation is a procedure where cells take up foreign DNA from their environment. This can happen in either prokaryotic or eukaryotic cells. A circular self-replicating molecule of DNA known as a plasmid transfers genetic information between bacteria enabling the microbes to gain antibiotic resistance as well as the ability to adapt to a new environment. Bacteria also have the capability to acquire small pieces (at random) of DNA from their environment but this however is said to be inefficient

Proteus Mirabilis Proteus Mirabilis is a motile bacterium that exists freely in water and soil; it may also be said to be a parasite that colonizes the human urinary tract. It exists in flagella or rod form as a gram-negative bacterium that displays uropathogenic virulence. Proteus Mirabilis is known to persist and live in people due to its unique virulence factors. Patients who have structural modifications within their urinary tract such as internal catheters are often deemed to be at high risk

Introduction Every winter the snow falls, and people get sick. Both of these items have components in common. Both the snow that falls, and the bacteria that gets people sick may be small, but when allowed to accumulate, characteristics of them become visible. While snow is made from frozen water, with flakes differentiating in the structure of them, bacteria is like that, to a sense. Certain bacteria families may have similar genomes, they do have slight differences that make up what they are. Just

BIOL 2050L C1 Instructor: Hélène d’Entremont Room 250 TA: Eileen Haskett Isolation, Examination, and Identification of Gram Negative Pathogenic Bacteria Present in Urine Used to Discover and Diagnose a Urinary Tract Infection Joel Goodwin (100119748) and James Bagley (Partner) 5 November 2014 Two urine samples were obtained, one from the researcher, and the other from an unknown patient labelled ‘pt 17’. The urine samples were diluted to 10-1 and 10-2 concentrations

E. coli are usually harmless, but can cause urinary tract infections, respiratory illnesses and other illnesses. This bacterium is also beneficial to humans and are part of our natural intestinal microflora, but E. coli can also lead to mild to serious illnesses in the human body. Disease causing E. coli are grouped according to the ways they cause illnesses. Escherichia coli is spread when people consume at-risk foods, these include foods

E. Coli, A Foodborne Illness Ethan Bauer Southeast Community College  Escherichia coli (E. coli) is a Gram-negative, rod-shaped, type of anaerobic bacterium that can be found in the environment, foods and the gastrointestinal tract of humans and animals as a normal flora (Centers for Disease Control and Prevention, 2015). It was first discovered by Theodor Escherich, a German-Austrian pediatrician and university professor, in the year 1885. He was highly keen and had a sharp mindset filled with

Aggregaitbacter actinomycetemcomitans (A.a.)is a gram negative organism that is present in a large number of the populations mouths [2]. It also plays a key role in the formation of aggressive periodontitis, specifically the localized form (LAP). A. actinomycetemcomitans produces several products that contiribute to the destruction of the peridontium . It can cross the mucosal epithelial barrier, accessing the bloodstream and has been detected in atheroma plaques, periarditis, septicemia, pneumonia

lipoproteins in E. coli have been identified, however the functions of most of these lipoproteins are still unknown. In contrast, almost all of the integral and transmembrane proteins of the OM assume a trimeric β-barrel configuration, and are known as outer membrane porins or OMPs. Some of the OMPs work by