Bacillus subtilis

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  • Bacillus Subtilis Lab Report

    identify the unknown. Unknown #297 was identified to be Bacillus subtilis with the various tests that were conducted. Most of the results that were observed in the laboratory matched the expected results for the bacterium. All of the morphological characteristics results matched expect in one test. There was a discrepancy in the motility test, where the test was observed to be negative. According to Microbewiki2, the test was supposed to be positive. The discrepancy might have been due to the error within the aseptic technique that was performed. When the tube was inoculated the needle might have been too hot, which might’ve killed the bacteria, to cause it to be non-motile. The starch hydrolysis test was observed to be negative. However, brown stated that the test for Bacillus subtilis should come out positive. When the starch plate was observed, there was a lot of growth, and there was only a small circle that was hydrolyzed in the middle of the plate.…

    Words: 726 - Pages: 3
  • Bacillus Subtilis

    Biology assignment Introduction ? There are many bacteria present in the world that affect people on a daily basis. There are any antiseptics available on the market to help combat the war against pathogenic bacterium. A common type of bacteria includes bacillus subtillis. ?B. subtillis is a bacterium found on the skin, in the digestive tract, in epithelial wounds, on extremities of the human body, in livestock and soil. Because B.subtiliis is ubquituous, it has developed adaptive strategies…

    Words: 1799 - Pages: 8
  • Bacillus Subtilis Research Paper

    1. Non-pathogen name: Bacillus subtilis 2. Description of non-pathogen: B. subtilis is a mesophilic, gram-positive bacillus that is commonly found in soil, although it can also survive in plants (1). B. subtilis are facultative aerobes, using butanediol fermentation or nitrated ammonification when oxygen is unavailable (1). The bacillus is motile by using a single flagellum and commonly forms biofilms which contain several B. subtilis all traveling in the same direction (1). It has a circular…

    Words: 1330 - Pages: 6
  • Adhatoda Vasica Research Paper

    effect in guinea pigs while administered with aspirin repressed the abortifacient activity because of inhibition in release/production of prostaglandins (Chandhoke 1982). 2.1.10. Antimicrobial The microbial flora collected from patients with gingivitis has shown inhibitory effect towards water extract (Patel and Venkatakrishna-Bhatt 1984). Moreover, the alcoholic extract of leaves and roots revealed antibacterial activity against Escherichia coli and Staphylococcus aureus, however, only S.…

    Words: 1982 - Pages: 8
  • Gram Unknown Lab Report

    test results until the correct bacteria were both positively identified. On day one of this process I received two bacteria, one labeled 7A and the other labeled 7B. I began the experiment with thirteen possible bacteria. The thirteen possible bacteria included, Enterococcus faecalis, Bacillus subtilis, Bacillus megaterium, Staphylococcus aureus, Staphylococcus epidermis, Micrococcus roseus, Micrococcus luteus,…

    Words: 1105 - Pages: 4
  • Analysis Of Keratin From Chicken Feather

    2. Materials and Methods: The keratin was extracted from Chicken feather which were collected from the local market of Raipur (21.14°N 81.38°E) Chhattisgarh, India. The 91% food grade alginate (sodium salt form) was purchased from Loba Chemie. The β-mercatpoethanol (mol. wt. 78.13) from LOBA Chemie, sodium dodecyl sulfate (SDS) (mol. wt. 288.38) and urea (mol. wt. 60.06) was purchased from Merck, and ethanol was purchased from Sigma-Aldrich. Antimicrobial strain of gram negative bacteria…

    Words: 823 - Pages: 4
  • Unknown Identification Test

    their choice. Unknown test tube #25 was obtained and streaked onto two agar plates to obtain individually isolated colonies. The gram-staining procedure was used to determine organismal morphology, resulting in a gram-positive cocci and gram-negative bacilli. A sucrose utilization test was performed and narrowed the possibilities of the gram-negative bacilli to Proteus vulgaris and Enterobacter cloacae. Then a Methyl Red and Voges-Proskauer (MR-VP) test was done to confirm the identity of the…

    Words: 1237 - Pages: 5
  • Ethical, Legal And Social Implications Of Genetically Modified Organisms

    ( Using GMOs, scientists could turn on and turn off genes that cause pest attraction. Altering the DNA of crops has been proven safe over and over. GM foods could also potentially end our world hunger crisis. We lose a lot of the world’s crops every year because of global warming and harsh growing conditions around the world. If we lose less of our crops to pest damage and droughts, then more crops will be…

    Words: 1121 - Pages: 5
  • Bacillus Cereus Lab Report Answers

    1. Summary of how I identified Bacillus cereus. a. First, I performed the gram stain test, I then went on to do the spore stain. b. The results I obtained from the gram stain were gram positive rods, I could tell they were positive by the purple color to them and the rod shape by the comparison provided in the lab manual (Wilkosz, Peterson). After I confirmed the results I performed the spore stain, which indicated that my sample was positive so it contained endospores. The sample should have…

    Words: 1479 - Pages: 6
  • Harmful Effects Of Corn Essay

    Corn, beyond doubt, is one of the biggest stories in human history. The “ruler” of the entire American food chain is corn. From farmyards to supermarkets, countless types of food ingredients and even forage are corn-derived. In 2007, the States alone produced 13 billion bushels of corn. Such massive reap is attributed to corn-farm subsidies by the government, a “legacy” of the Great Depression which gives corn an unnatural edge over other kinds of crops. The policy is, in fact, skewed in favor…

    Words: 723 - Pages: 3
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