Gram-positive bacteria

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    Gram Negative Unknown Lab Report #20 BIOL 3444-008 Giang Nguyen TA: Malini Kotak 11/05/2014 Abstract The experiment is conducted in order to identify a randomly given unknown gram-negative microorganism. By comparative analysis of biochemical tests that were performed throughout the semester to find out its characteristics and determine the identification of bacterium out of four potential unknown was given. To figure out the characteristics, T-streak was performed to isolate…

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    doctor will begin laboratory tests to verify the causative organism. By swabbing the acne on the visual site, the bacteria can be isolated and stained to find out whether it is Game positive or Gram negative, after Gram staining, there will be an ability to view the morphology or shape of this bacteria. The doctor can further test for the bacteria present, after the doctor uses gram staining, they can then use the catalase test, and polymerase chain reaction (PCR) tests to further positively…

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    Unknown Lab Report

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    media, and determining if it’s positive or negative. Performing aseptic techniques is the most crucial step that requires the utilizing of transferring, inoculating, and storing bacterial cultures and media. Aseptic technique is defined as procedures that prevent contamination…

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    Unknown Bacteria

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    world is composed of many bacteria that can either help or destroy us. Therefore, its’s imperative to learn and study them. The purpose of the lab was to put into action the methods learned in the laboratory to determine our unknown bacteria. Bacteria can have different features, shapes, and or arrangements that help microbiologist differentiate them. Bacteria can be classified as Gram positive or negative (difference in cell wall), with the help of the Gam stain (“Gram Stain”, n. d). Another…

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    from a member of our group’s hand. Bacteria are prokaryotic, but like all other living organism there are many genus and species. Through experimentation these unknowns can be found can be brought to light. Bacteria can be classified either gram-positive or gram-negative. These groups differ by the composition of their cell walls. In particular, the difference in the composition pertains to amount of peptidoglycan, a polymer of amino acids and sugars, present. A Gram test is most commonly used…

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    be performed was a gram stain. Gram staining determines whether the microorganism is gram positive or gram negative. After doing these procedures it was determined that the organism was a gram positive cocci. The biochemical test performed were chosen based on this information. Principles of biochemical test: Test Reagents Purpose Slant Shows Growth Gelatin deep Shows Motility and production of…

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    Gram Catalase Test Report

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    Broth culture #20 was selected and subjected to qualitative tests for identification. Gram stain tests were performed in order to identify which unknown is gram positive and gram negative. Using selective and differential media, like MacConkey agar which allows the growth of gram negative bacteria only that are able to ferment lactose. Also, mannitol agar was used which isolates and detects gram-positive bacteria. As well as blood agar, which is a nutritive media with differential properties in…

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    this bacteria can be spread in different modes such as direct contact from an infected wound, contact with the hyaluronidase, an enzyme produced by the bacteria that destroys tissues or even skin to skin contact with an infected person. There are some difference in characteristics between Gram-positive and Gram negative bacteria, where one of most distinctive differences is that Gram-positive bacteria composes of a thick layer of peptidoglycan enveloping the plasma membrane, where as…

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    journey to the microscopic world of bacteria can be likened to a child exploring the world for the first time. As the child discovers the world, she also learns several survival skills along the way. In the same manner, all the knowledge I learned from Microbiology class and laboratory sessions regarding microbial world equipped me to identify bacterial unknowns from a clinical sample. The task was to successfully separate and accurately identify two bacteria of a specimen taken from an…

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    Biology Lab Report Essay

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    and Identification of an Environmental Bacteria to the Genus level Introduction: Bacteria can be found virtually anywhere, and interaction with these organisms occurs daily (Fitzpatrick & Allison, 2014). However, though the interaction between human and bacterium is continual, it is not always known what type of bacteria a person is coming into contact with. Therefore it is important to understand, and to have knowledge about, the characteristics of bacteria in our environment. As part of a…

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