Yesinia Pestis Yesinia Pestis is the bacteria that caused the Bubonic Plague in 1347 and marched across Europe killing many people. This bacterium can grow with or without oxygen making its expansion inevitable. Yesinia Pestis is able to survive for several months in cool‚ moist places like rodent holes. People in the United States can be infected by Yesinia Pestis each year from flea or rodent bites‚ it is estimated that 10 to 20 people are infected yearly. Bacteria transmission occurs in one or in
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Escherich originally named the bacteria‚ bacillus communis coli. After the demise of Dr. Escherich the intestinal bacteria was then named Escherichia coli after the late doctor in 1919. The bacteria Escherichia coli are classified as follows. Domain- Bacteria Kingdom- Eubacteria Phylum- Proteobacteria Class- Gammaproteobacteria Order- Enterobacteriales Family- Enterbacteriaceae Genus- Escherichia Species- E. coli Escherichia coli is a heterotrophic bacteria that is most commonly found within
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Microbial ecologist -- studies bacteria that degrade oil d) Microbial physiologist – studies fermentation of sourdough bread e) Molecular biologist – studies recombinant DNA 2) You are observing a cell through a microscope and note that it has not apparent nucleus. You conclude that it most likely a) has a peptidoglycan cell wall b) has a cellulose cell wall c) moves by pseudopods d) is part of a
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AND DETEGENTS AGAINST BACTERIA BACTARIUM EVALUATION OF EFFECTIVITY OF SOAPS AND DETEGENTS AGAINST BACTERIA
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strain of bacteria and to observe its characteristics. This same approach can be used when testing for resistance evolution within bacterial strains. Our hypothesis states that bacteriophage will not be present within our sample from East Lake. With the use of a phage buffer and soft agar‚ it provides an even suspension and growth of cells. This is essential for seeing lysis caused by bacteriophage. After 24 hours‚ our data seemed significant as signs of successful infection within the bacteria was not
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between Viruses‚ Bacteria‚ Cyanobacteria‚ Achaea and Fungi. Bacteria or bacterium are unicellular microorganisms. They are essentially only a few micrometres long and form of various shapes including the spheres‚ rods and spirals. A BACTERIAL CELL Illustration courtesy of Wikipedia. A Virus (from the Latin noun virus‚ meaning toxic or poison) is a sub-microscopic particle that infect the cells of a biological organism. Illustration courtesy of mc3cb.com. BACTERIA VIRUS STRUCTURE
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and its relatives ..Sulfa drugs ..Trimethoprim and sulfamethoxazole ..Other bacteria killers..Nitrofurantoin ..Aminoglycosides ..Polymyxin B..Antivirals..What can we do about viruses -- if anything? ..Acyclovir ..AZT and Other Reverse-Transcriptase Inhibitors ..Protease Inhibitors ..Why you shouldn’t use antibiotics for a cold What are antibiotics?Antibiotics are medicines that help your body fight bacteria and viruses‚ either by directly killing the offending bugs or by weakening them
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components of a single organism. Gram’s Stain is a widely used method of staining bacteria as an aid to their identification. It was originally devised by Hans Christian Joachim Gram‚ a Danish physician. Gram’s Stain differentiates between two major cell wall types. Bacterial species with walls containing small amounts of peptidoglycan‚ and‚ characteristically‚ lipopolysaccharide‚ are gram negative whereas bacteria with cell wall containing relatively large amounts of peptidoglycan and no lipopolysaccharide
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AND SPREAD OF INFECTION 1.1 Identify the differences between bacteria‚ viruses‚ fungi and parasites What is a Bacteria? A bacteria is a living things that are neither plants nor animals‚ but belong to a group all by themselves. They are very small--individually not more than one single cell--however there are normally millions of them together‚ for they can multiply really fast. Bacteria are prokaryotes (single cells that do not contain a nucleus). Every species has a great
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resistance can be genetically transformed into plants. In bioremediation‚ bacteria can be genetically transformed with genes enabling them to digest oil spills. In medicine‚ diseases caused by defective genes are beginning to be treated by gene therapy; that is‚ by genetically transforming a sick person’s cells with healthy copies of the defective gene that causes the disease. You will use a procedure to transform bacteria with a gene that codes for Green Fluorescent Protein (GFP). The real-life
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