that a few of the slides he’d been working on had been contaminated by fungus. Upon noting that the staphylococcus colonize bordering the fungus had died he began asking more questions. Namely what was it about the fungus that caused it to kill the bacteria? Through more research he was able to single out a substance that the fungus was producing as the result of its biological processes. He called this substance “mould juice” for
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findings: My hypothesis was that garlic decreases the growth of bacteria substantially‚ which my experiment and results have proven to be correct. In order to prove my hypothesis correct‚ I carried out an experiment where I grew bacteria on 14 different agar plates and placed garlic on seven of the agar plates and then had no garlic present in the other seven agar plates. All 14 agar plates were kept under the same conditions while the bacteria colony was growing in order to ensure that all factors were
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Identify the differences between bacteria viruses‚ Fungi and Parasites. Viruses are pieces of nucleic acid (DNA or RNA) wrapped in a thin coat of protein that replicate only within the cells of living hosts. Bacteria are one-cell microorganisms with a simple cellular organization whose nucleus lacks a membrane. Parasites may be protozoa‚ yeasts‚ or multicellular organisms such as fungi or worms that live in or on a host to obtain nourishment without providing any benefit to the host. Fungi
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The expected result was supposed to show Gram positive and Gram negative bacterium growing on a separate media. Having checked two Nutrient plates‚ signs of visible growth of two different bacterium were present. Due to the fact‚ that one type of bacteria didn’t appear to be fully
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Session #1 Lab 1 OBSERVING BACTERIA AND BLOOD D Haynes BIO-218A Microbiology Lab Friday‚ January 17‚ 5:00pm Objective(s): Our objective is to gain knowledge of the functions and operations of the microscope through observation of bacteria and blood slides that are available for this assignment. We are also learning to “see” and observe various bacteria and their shapes as well as live yogurt cultures‚ blood‚ plaque and cheek swab samples and their arrangements. We
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A bacterium of choice by Frederick Griffith was S. pneumoniae cells also known as Pneumococcus bacteria. This is due to the growth of bacteria inside the body of a host regardless in the form of either solid or liquid cultures. In 1928‚ Frederick Griffith studied and published his findings on the different strains of Pneumococcus bacteria. There were 2 in particular that looked different; S and R. The R colonies has rough surface whereas the S colonies have smooth surface. Intrigued by the experiment
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gram-negative and gram-positive bacteria are and what it’s composed of. Gram-positive bacteria take up the class of bacteria that stain crystal violet in the method of bacterial differentiation. Where gram-negative bacteria are a class of bacteria that does not retain crystal violet. Instead they are counter-stained pink by Safranin‚ and because of this‚ identifying positive is possible. One of the many differences between gram-negative and gram-positive bacteria is their peptidoglycan. Which are
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A. The typical human mouth contains a writhing orgy of bacteria. Most of these. Most of these microscopic organisms are bengin‚ and some are even beneficial‚ but one particular variety is a conspicuous troublemaker: Streptococcus mutans. These ubiquitous bacteria thrive on sugars in the mouth‚ which they consume while excreting lactic acid. This acid is responsible for the great majority of tooth decay in humankind because it erodes the enamel and dentin of the teeth. B. A Florida-based company
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Increasing Fiber in Rice Pilaf Arcelay‚ Marilyn March 30‚ 2007 FOS 4041L Dr. Dixon Introduction Obesity is a word that everyone is currently familiar with. The media and health professionals have been working tirelessly to make the general public aware of its prevalence and detriments to society. With the staggering statistics of 32.2% prevalence in adults and a range of 13.9% to 18.9% prevalence in children and adolescents‚ these outstanding numbers stand
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tea on the growth of E. coli bacteria cultures Kierstin Barker‚ Melissa Bischak‚ Jackie Tyszkiewicz‚ Errin Enany September 25‚ 2012 Abstract: This study was carried out in order to investigate whether black tea has antimicrobial properties as stated in Steven Johnson’s The Ghost Map. If tea does have antimicrobial properties‚ then it could aid in warding off waterborne diseases. We believed that if black tea is steeped in boiled water‚ then the amount of bacteria exposed to this solution would
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