Listeriosis Although there are countless types of infectious diseases around the world‚ a great majority of them are preventable. Infectious diseases are disorders caused by organisms such as bacteria‚ viruses‚ fungi or parasites (Mayo Clinic‚ 2016). Listeria is not a commonly mentioned disease‚ however it has the potential to be deadly when not identified or serious symptoms are overlooked. This foodborne‚ infectious disease is caused by a gram stain-positive motile bacterium named Listeria
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There are several genera of micro-organisms related to contact lens storage case contamination. Unlike CL contamination which is bacterial in nature‚ storage case contamination is often polymicrobial.(Larkin et al. 1990; Gray et al. 1995) Gray et al found that bacterial contamination is common in 77% of lens cases‚ followed by contamination with fungi (24%) and then protozoan (20%). Most commonly found organisms include Pseudomonas aeruginosa‚ Staphylococcus spp‚ Acanthamoeba spp and Fusarium species
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In general‚ members of the genus Vibrio are Gram-negative‚ motile and most of the members have a single polar flagellum‚ when grown in liquid medium (Kaysner & DePaola‚ 2004). Vibrio cholerae lives naturally in riverine and is the causative agent of cholera outbreaks and epidemics. Vibrio cholerae is comma-shaped. Initial isolates are slightly curved‚ whereas they can appear as straight rods upon laboratory culturing. Vibrio cholerae is a facultative anaerobe and can undergo respiratory and fermentative
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I enjoyed doing the virtual lab. I treat water as an occupation so I understood how and what to add to treat the water. If you have a low (acidic) pH then you should add sodium hydroxide. If you have total coliforms‚ you should chlorinate before and after treatment. Often‚ we test houses for total coliforms and e. coli. If the bacteria is positive‚ then we chlorinate the well. After we make sure all the chlorine is throughout the house‚ we let it sit for 24 hours to disinfect the pipes and
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Luminol is a chemical that exhibits chemiluminescence‚ with a blue glow‚ when mixed with an appropriate oxidizing agent. Luminol is a white-to-pale-yellow crystalline solid that is soluble in most polar organic solvents‚ but insoluble in water (Bortoluzzi‚ Cadore‚ Gallon‚ & Imanishi‚ 2014). Method for the detection of traces of blood in the environment and‚ for this reason‚ can also be used to monitor cleaning and disinfection procedures in units at risk for contamination with blood. Microcrystalline
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4. Results No hypotheses in the discussion section were necessarily falsified‚ but some broad statements were made. For example; “Culture conditions obviously influence the outcome of adaptive evolution.” This statement implies that they have extensive knowledge on all the different aspects of evolution. Many scientists today will admit that we do not fully understand evolution and all the factors involved. To say that the conditions ‘obviously’ influenced that outcome is too broad of a statement
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In taxonomy‚ Legionella pneumophila belongs to the Legionellaceae family. In addition‚ Legionella pneumophila belongs to the Legionellales order‚ the Gammaproteobacteria class‚ the Proteobacteria phylum‚ and finally the bacteria domain.1 Legionella pneumophila is a Gram-negative‚ rod shaped‚ nonsporing‚ aerobic‚ facultative bacillus bacterium that is naturally found in fresh water sources that have high algal and iron contents. Legionella pneumophila is mainly aquatic however; it has an aerobic metabolism
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Gold is widely used in modern day medicine to treat disorders. This is because gold is very resistant to bacteria. Bacteria are microscopic single-celled organisms. Bacteria are prokaryotes‚ meaning the entire organism consists of a single cell with a simple internal structure. The DNA of a prokaryote is neatly packed in the nucleus. The bacterial DNA floats freely in a twisted threadlike mass called the nucleoid. Gold is unaffected by almost everything. The only materials that can affect gold are
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Pseudomonas taiwanensis – Enrichment‚ Isolation and Identification Microbiology 521 2/10/12 Purpose: The purpose of this experiment was to enrich Pseudomonas bacteria‚ isolating a species of Pseudomonas and identifying it using phenotypic properties and DNA sequencing as an existent or completely new and undiscovered species of Pseudomonas. Overview: Genus Pseudomonas is a chemoheterotrophic bacteria found in soil and water. They are Gram negative‚ motile‚ paired rods that are also oxidase-positive
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Proteus mirabilis The genus Proteus‚ according to Bergey’s Manual of Determinative Bacteriology‚ is a group of straight rod Gram negative bacteria around 0.4-0.8 μm in diameter and 1-3 μm in length. In the microscopic test done‚ it was seen that the unknown culture contained rods that are on the shorter side‚ thus was identified as bacteria that appear to be coccobacilli. Because of the presence of peritrichous flagella‚ species included this genus are motile and most strains swarm in periodic cycles
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