4°C‚ which clearly shows the bacteria isolated is not Photobacterium phosphoreum. Second‚ the bacteria could not be Vibrio albensis‚ since we obtained the source of species from marine. Thirdly‚ genus Vibrio would show positive oxidase test. But‚ upon repeating the oxidase test for 5 times‚ a negative result was obtained. Moreover‚ there was no growth in the TCBS agar which is a selective media for Vibrio genus. Therefore‚ the bioluminescent bacteria isolated‚ could not be either Vibrio Fischeri or
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David Kennedy Bio 210 Lab Report 1 10/11/13 Microbial Growth Background Information: This lab was conducted in order to understand basic differences among differential and selective media‚ while recognizing how each media is used to isolate and identify microorganisms (Wistreich‚ 2003). The first microorganism analyzed was Staphylococcus epidermidis. This organism is gram-positive‚ single celled‚ arranged in grape-like clusters‚ and cocci in shape (Bukhari‚ 2004). S. epidermidis is approximately
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14-01-05 Cellular Respira8on Upcoming events: L3.1 {cell resp} – Jan 16/17th Quiz Jan 22/23st (in lieu of write-up) Mitochondrial Cytoplasm
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English Composition Dr. Linfoot 30 September 2010 Worried Sick Believe it or not most of us are affected by some form of anxiety in our everyday life. Weather it is being shy when talking in front of a large audience or worrying about a big paper you have to write for your English class. These are both common forms of anxiety related issues. Though neither is very severe both can be attributed to a manifestation of anxiety. It is believed that it is normal for everyone to experience
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procedure that you followed (including amount of substrate‚ enzyme etc‚ and the whole procedure including incubation times) (3 Points) -We had three different test tubes. These test tubes were labeled 1‚ 2‚ and 3. These tubes all had 3.5 mL water‚ 2 mL catechol‚ 0.5 mL extract. Each of these tubes were put into water of three different temperatures for 5 minutes and then were taken to the Spec 20 to check their absorbency. We had a blank tube‚ which measured 1 mL of potato extract and 5 mL of distilled
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Critically evaluate how the biological basis of major depression can be explained by examining the pharmacological actions of antidepressant drugs Major depression is a severe‚ recurrent and disabling mental disorder usually characterized by a constant sense of hopelessness and despair‚ coupled with low self esteem and a loss of interest in usually enjoyable activities. In the US‚ 3.4% of people with major depression commit suicide‚ and roughly 60% of people that commit suicide have some form
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for catalase activity‚ showing bubbling when added to H2O2‚ indicating that O2 (and water) were being released. Although enteric bacteria use oxygen as a terminal electron acceptor‚ tests for oxidase activity indicated that they possess terminal oxidases other than cytochrome c oxidase. That is‚ the oxidase reagent did not change from pink to purple when it came in contact with any of the organisms‚ indicating a negative result. Instead of oxygen‚ some facultative anaerobes employ nitrate as a terminal
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solutions‚ Kovac’s reagent‚ zinc dust‚ hydrogen peroxide‚ API 20E incubation tray‚ Bunsen burner‚ oxidase reagent and bacteria Methods: The method used for the API (analytical profile index) 20E System was the aseptic technique was used for the inoculating loop to get a unknown colony from the streak plate or pure culture slant. A small amount was smeared over the filter paper and several drops of oxidase reagent were added and the color change was noted. Another loop-full of bacteria was added to
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DELA CRUZ‚ CYNTHIA GRACE C. 2008-13749 FS 125 March 10‚ 2012 ANTIMICROBIAL AGENTS 1. Introduction Food preservation has long been practiced since the olden times with processes such as heating ‚ drying‚ fermentation and refrigeration. In spite of this‚ physical methods are not enough to eliminate all microorganisms found in foods. Therefore‚ antimicrobial agents are needed to destroy these foodborne pathogens‚ so that the food will have a longer shelf-life. As technology progresses‚ improvements
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rays‚ and immobilization of toxic ions. There are several types of melanin; eumelanin and pheomelanin (found mostly in animals as L-DOPA)‚ Neuromelanin (found in brain as dopamine‚ norepinephrine‚ and serotonin)‚ Allo Melanin (found in plants‚ as catechol‚ and pyrogallol)‚ Pyomelanin (found in fungi or bacteria as homogentisic acid) Melanin is important to this experiment because‚ the structure of melanin is not fully known. With more knowledge about this chemical‚ and the way it function‚ we would
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