colonies ERIC LI Abstract In this experiment we work with different types of bacteria and experiment with their different properties and how they grow in certain situations. Different samples of bacteria cultures were gathered from different places such as the mouth‚ shaded mulch‚ and from the table top. The samples were collected by using a cotton swab and swiped onto a petri dish filled with nutrient agar. The bacteria were then left to grow on their own in a relatively well shaded area. As a control
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Rickettsia‚ mycoplasma and chlamydia are three very unique bacterias. Here are a few reasons why for each bacteria. Rickettsia is an obligate intracellular gram-negative bacteria. This type of bacteria is very small and is bacilli shaped. Rickettsia causes rocky mountain spotted fever‚ rickettsia pox‚ epidemic typhus and murine typhus disease. It is found in ticks‚ lice‚ fleas‚ mites‚ chiggers and mammals. It is transmitted by a bite (vector transmission) from an infected tick‚ mite‚ flea or any
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Introduction The purpose of this lab was to identify unknown bacteria cultures using various differential tests‚ and my unknown bacteria is #17. The identification of these unknown cultures was accomplished by separating and differentiating possible bacteria based on specific biochemical characteristics. Whether the tests performed identified specific enzymatic reactions or metabolic pathways‚ each was used in a way to help recognize those specifics and identify the unknown cultures. The differential
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bacilli‚ in red)‚ the most common Gram stain reference bacteria Gram staining (or Gram’s method) is a method of differentiating bacterial species into two large groups (Gram-positive and Gram-negative). The name comes from its inventor‚ Hans Christian Gram. Gram staining differentiates bacteria by the chemical and physical properties of their cell walls by detecting peptidoglycan‚ which is present in a thick layer in Gram-positive bacteria.[1] A Gram-positive results in a purple-blue color while
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university‚ I cultivate bacteria and observe what harms or benefits the different species are. For years‚ I focused my research on society’s effect on bacteria’s natural development. The issue I bring to you today demands a shift in perception of bacteria and antibiotics‚ a paradigm shift. We need to change the way we focus our attention on these topics. These points will allow us to develop an idea of how to take a stand sociologically in the war against resistant bacteria. Society idolizes antibacterial
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Please answer the following questions. Your answer for each question should be a minimum of 150 words (half page). Please number your answers with the number of the question you are answering. 1. Koch was the first scientist to prove that bacteria actually cause disease. He scientifically demonstrated that a disease is caused by a particular organism. He created four general guidelines to aid in identification of disease causing pathogens. These guidelines developed from his work with purified
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B. Cereus about Your Health Emily Parkhurst 02/28/2013 Michael Wu “I have complied with all rules if academic integrity while preparing this report.” Results: Bacteria Survival Rate after being emerged in Boiling Water Amount of Bacteria Surviving Time E. Coli S. Marcescens B. Cereus 0 Seconds ++++ ++++ ++++ 10 Seconds +++ +++ +++ 30 Seconds ++ 45 Seconds 60 Seconds + 300 Seconds + Table 1: ++++ = the highest amount surviving‚ + = the least amount
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Antibiotic resistance results from bacteria changing in ways that make those antibiotics no longer useful. Resistance is a common yet problematic issue in treating pulmonary exacerbations or infections in people with Cystic Fibrosis (CF). Not all bacteria are bad. However‚ there are some that can cause infections. As bacteria are exposed to antibiotics over time‚ resistance may develop‚ and the number of antibiotics we have to kill the bacteria decreases as well. Thus‚ it is important to learn
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Bacteriophage is a term that means bacteria eater‚ it describes the agent’s ability to kill bacteria. Bacteriophages can infect and create more copies of itself inside of a bacterial host which is why they are considered pathogenic phages (Jassim et al‚ 2014). Overall‚ Bacteriophages are one of the most ordinary and unique organisms in the global sum of all ecosystems that can be used to make the world a healthier place to sustain human life. In today’s society the overuse of antibiotics
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as medical and a bacteria killer. A study at the University of Ottawa in 2008 has shown that honey was effective in killing bacteria (Colihan‚ 2008). Honey is effective because of the unique compounds found in it (Moore‚
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