Produced by cell clusters in the pancreas called the Islets of Langerhans‚ insulin is a hormone that regulates glucose concentration in the blood. It is a protein synthesised and stored by beta cells‚ which secrete it in surges responding to changes in glucose levels. (Hardin‚ Bertoni and Kleinsmith‚ 2012) Fig 1. The Pancreas and Insulin |Source: University of Maryland (2011) | | |
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ABSTRACT Almost all people today use hair conditioners even i use hair conditioner because my hair is so frizzy. Many commercial hair conditioner today are not so effective so i came up with the idea to make a hair conditioner. I can often see banana and honey at home and some banana are already going to rot and our honey is already going to expire and I’ve heard that some people are putting honey on their hair and some put banana but I haven’t heard of mixing honey and banana together to be a
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Pure Culture Techniques In this first lab‚ you will be learning some very fundamental and important techniques. As is the case with most things‚ shorts cuts usually get you in trouble. This is especially true in Microbiology. The techniques you will be learning tonight‚ if mastered correctly‚ will make your life and learning experience in Microbiology much easier‚ if you don’t pay attention and practice these techniques incorrectly‚ well then……? Today you will be learning the following techniques:
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ABSTRACT In todays world of ever evolving genetic mutations the incidence of drug resistant forms of microorganisms are on the rise. The importance of identifying these pathogens and their related epidemiology has become increasingly more important. The purpose of this study was to identify an unknown bacterium in a controlled laboratory environment over a 5 week period. Utilizing a variety of differential testing and staining methods learned in the microbiology course‚ students were to determine
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Aging‚ “The accumulation of diverse deleterious changes occurring in cells and tissues with advancing age that are responsible for the increased risk of disease and death.” (Tosato‚ 401). This major aspect of our life is still a mystery to scientists‚ however there are many theories behind the process‚ and reason humans and all living organisms age. Many studies have been performed to understand more about this phenomenon‚ yet no definitive theory has been stated. Free radical theory has been a popular
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glucose (without the production of gas‚ as the Durham tube placed inside the PR Glucose was not displaced) and sucrose‚ but not lactose. The abovementioned genus is also indicated to produce a negative result in oxidase test and a positive result in catalase test‚ and the unknown produced negative and positive results in those tests‚ respectively. The genus is also indicated in the Bergey’s manual as having a positive result in the methyl red (MR) test; however‚ the unknown initially produced a negative
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pathogenic bacteria‚ and is associated with or found in the intestinal organ. The antibiotic that E. coli is resistant to is Penicillin. Bacillus subtilis—better known as B. subtilis—is known as the hay bacillus or the grass bacillus. It is gram and catalase positive. It is rod-shaped‚ with the ability to form a tough‚ protective‚ shield around itself. It can tolerate extreme environmental conditions‚ and is an obligate aerob. The antibiotic that B. subtilis is resistant to is Tetracycline. When a bacteria
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aerobe Opportunistic Pathogen Fastidious Requires special media( charcoal yeast extract) or cell culture Hard to gram stain Morphology: bacilli Motility: flagella Gram reaction: gram negative Requirement growth: aerobe Oxidase positive Catalase positive Produce pigment(soluble-green) Metabolically versatile (Synthesize an unusually large number of enzyme and metabolize a wide variety of substrates) P. aeruginosa Opportunistic pathogen Resistant to many disinfectants(This resistance
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Atrazine (1-chloro-3-ethylamino-5-isopropylamino-2‚ 4‚ 6-triazine‚ CAS: 1912-24-9) was purchased from Dr. Ehrenstorfer GmbH (97.7%‚ Germany). Ethyl acetate (99.8%‚ ANPEL Scientific Instrument (Shanghai) Co.‚ Ltd.) was used as solvent for standard solutions. Acetonitrile used as HPLC eluent was purchased from ANPEL Scientific Instrument (Shanghai) Co.‚ Ltd.‚ KH2PO4·12H2O‚ K2HPO4·2H2O‚ dichloromethane and other chemical reagents used in cultivated media were purchased from Sinopharm Chemical Reagent
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of viability of probiotic bacteria. Lactobacillus delbrueckii subsp. bulgaricus produces sufficient hydrogen peroxide to display inhibition of probiotic. Accumulation of hydrogen peroxide in growth media can happen because lactobacilli do not have catalase enzyme responsible for degradation of hydrogen peroxide to water and oxygen. Hydrogen peroxide and other toxic oxygenic metabolites such as superoxide anion and hydroxyl radical can react with other components eventually lead to microbial cell death
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