Escherichia Coli Research Paper

Escherichia Coli is a rod-shaped bacterium that measures approximately 0.5 μm in width by 2 μm in length. It is a Gram-negative bacterium. Its cells stain gram negative because they have a thin cell wall with only one to two layers of peptidoglycan. They live in environments with higher temperatures rather than cooler temperatures. E. coli is said to be the “model organism”. Many microbiologists use these bacteria as a resource for understanding other prokaryotic life and are the most carefully

pus from surgical abscesses. (Mandal, 2012). Escherichia coli, belongs to the family of Enterobacteriaceae. It is a gram-negative bacteria, with a rod shaped and a non spore forming motile with peritrichous flagella. This bacteria form a colony of two to three (2-3mm) in diameter that grow in MacConkey agar.

decay. So they began to research beneficial ingredients to add to their toothpaste. In the 1940s, Americans were estimated to have over 700 million cavities a year, making dental disease one of the most prevalent of U.S. health problems (Procter &

Efficacy of Tea Tree oil (Melaleuca alternifolia), Honey, and Capsicum annuum Against Staphylococcus epidermidis and Escherichia coli Kenzie Perryman, Daniela Perez, and Alexa West Department of Life, Earth and Environmental Sciences, College of Agriculture, Science and Engineering, West Texas A&M University, Canyon, TX 79016 November 8, 2015 This experiment was designed to examine the efficacy of naturally occurring antimicrobials against common bacteria located in a normal human microbiome

experiment was Escherichia coli and the genes introduces for the transformation were: gfp and bla by a pGLO™ plasmid. After the insertion of the target genes and growing the bacteria on specialized LB media, it could be seen that the transformants were positive for the gene expression. The transformed E. coli on the media appeared fluorescent green under UV light. Introduction The bacteria used in this experiment is Escherichia coli which is not naturally competent. E.

Penicillin, Ampicillin and Streptomycin on Escherichia Coli Introduction Escherichia Coli is a bacterium that inhabits the gastrointestinal tract of both humans and animals. E. coli isn’t always a harmful bacterium. Some are actually crucial to a healthy intestinal tract because this bacterium assists with the production of Vitamin K2 and stops pathogenic bacteria from interacting and establishing inside the intestines (Gould, 2010). A person maybe exposed to E. coli through water or food that maybe contaminated

THE EFFECT OF INCREASING THE CONCENTRATION OF DETTOL ANTISEPTIC LIQUID ON THE GROWTH OF E.COLI Background: Escherichia coli are rod shaped, gram negative bacteria often found in the gut of humans and other warm-blooded mammals (Jacques & Ngo, 2004). It is transmitted primarily through faecal contaminated food and water. Most strains of E. coli are not harmful to humans, however some strains are pathogenic and can cause symptoms including diarrhoea (Unknown, 2012). The active ingredient in Dettol

Introduction Biofuels, derived from living organisms rather than petroleum-laden rock, are the focus of current energy research. The need for biofuels and alternative sources of energy will be necessary as the earth’s resources begin to diminish. In cohesion with this concern, the current uses of fossil fuels are a concern as the environment pays an incredible toll for our overuse of this resource. Many have attempted to replace petroleum fuel with the first generation biofuels would require

Abstract Due to energy and environmental concerns, producing fuels from renewable energy sources has seen advancements, especially through collecting biofuels produced from microbes. Many of the biofuels produced from microbes are done so by different pathways in order to generate fatty acid branched-chain esters (FABCEs) and branched fatty acid branched-chain esters (BFABCEs), which are promising isopentenols. These can be produced via multiple pathways, the leucine and valine pathway as well

determined to be Escherichia coli. The purpose of this report is to describe the various tests that helped develop a better understanding of the unknown microorganism in terms of the physiology, morphology, motility, and antimicrobic sensitivity it is characterized with. Indole production, hydrogen sulfide, and the colony morphology on the Eosin-methylene blue (EMB) plate, were the critical results that led to the conclusion that the organism was E. coli. In the indole production test, E. coli was one of