What is Food Microbiology Food microbiology is the study of food micro-organisms; how we can identify and culture them‚ how they live‚ how some infect and cause disease and how we can make use of their activities. Microbes are single-cell organisms so tiny that millions can fit into the eye of a needle. They are the oldest form of life on earth. Microbe fossils date back more than 3.5 billion years to a time when the Earth was covered with oceans that regularly reached the boiling point‚ hundreds
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Identification of Staphylococcus aureus and epidermidis Wendy Heck Bio 175: General Microbiology Fall 2012-11-21 Staphylococcus aureus is the most pathogenic for humans and Staphylococcus epidermidis is part of the normal flora and is of low pathogenicity. Staphylococcus epidermidis and Staphylococcus aureus are two medically important species of bacteria. A culture from the nose and throat was taken to perform whether or not Staphylococcus epidermidis or Staphylococcus aureus were detected. Test
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virility‚ still immunity Lister ¡V aseptic surgery (phenol on surgical wounds) Koch ¡V cause of anthrax (Bacillus anthracis) ¡V bacteria in blood‚ injected into healthy‚ died‚ compared bacteria Jenner ¡V vaccines (cowpox provided immunity against small pox) ¡V milk maids Erlich ¡V ¡§magic bullet¡¨; salvarsan against syphilis Fleming ¡V Penicillium chrysogenum inhibited bacteria growth in plate Beadle & Tatum ¡V one gene one enzyme hypothesis Avery‚ MacLeod & McCarty ¡V DNA = hereditary material Tatum
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Probiotics Probiotics are living microscopic organisms‚ or microorganisms‚ that scientific research has shown to benefit the health. Most often they are bacteria‚ but they may also be other organisms such as yeasts. In some cases they are similar‚ or the same‚ as the “good” bacteria already in the body‚ particularly those in the gut. These good bacteria are part of the trillions of microorganisms that inhabit the bodies. This community of microorganisms is called the microbiota. Some microbiota organisms
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Outcome 1 - Understand the causes of infection 1 - Identify the differences between bacteria‚ viruses‚ fungi and parasites Bacteria - Bacteria are organisms made up of just 1 cell. They are capable of multiplying by themselves‚ as they have the power to divide. Bacteria exist everywhere‚ inside and on our bodies. Most of them are completely harmless and some of them are very useful. But some bacteria can cause diseases‚ either because they end up in the wrong place in the body or simply because
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Causes and spread of infection Identify the differences between bacteria‚ viruses‚ fungi‚ parasites? -Viruses aren’t living. They’re only made of complex proteins and nucleic acids. Bacteria‚ Fungi and Parasites are living organisms. - Bacteria are unicellular microorganisms. Fungi and Parasites are multicellular. - Fungi have cell walls made of chitin and they aren’t animals. Parasites and bacteria are animals. Bacteria come in 3 main shapes; spherical which are known as cocci‚ rod shaped
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systems daily to fight against invading pathogens that cause diseases and infection. These molecules are an essential part of the immune system as they are both the markers and signals in notifying other components of the immune system to destroy the pathogenic threat. Antibodies have also become something much more as they have helped in the advancement in the fields of biological research and development of commercial and medical products. From the articles and websites covering its alternative use‚
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Cells 1. Cell theory a. Outline the cell theory b. Discuss the evidence for the cell theory c. State that unicellular organisms carry out all the functions of life d. Compare the relative sizes of molecules‚ cell membrane thickness‚ viruses‚ bacteria‚ organelles and cells using the appropriate Sl unit e. Calculate the linear magnification of drawings and the actual size of specimens in images of known magnification f. Explain the importance of the surface area to volume ration as a factor
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have bristle-like fibers that are located on the surface of the cell. Most fimbriae are made of protein that can make cells stick together or even to other surfaces. This forms a tight adhesion between the bacteria and the epithelial cells. 13. Describe the different types of pili found in bacteria. Include in your description the functions/purpose of each type of pili. Pili
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MIMOSA PUDICA L.”‚ the antimicrobial activity of Mimosa pudica was tested with various extracts such as petroleum ether‚ ethylacetate‚ acetone and aqueous against various human pathogenic bacteria such as Escherichia coli‚ Pseudomonas aeurogiosa‚ Lactobacillus‚ Salmonellatyphi and Staphylococcus aureus also with plant pathogenic fungus such as Pestalotia foedians‚ Fusarium oxysporum and Paecilomycesvariotii at different concentrations. Out of the selected various solvent extracts‚ in bacterial study
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