FACT: Potassium tellurite (K2TeO3) inhibits the growth of gram-negative bacteria and most of the upper respiratory tract normal flora. Oxyanions of tellurium‚ like tellurite (TeO32-)‚ are highly toxic for most eukaryotic and prokaryotic organisms. Known for its antimicrobial properties‚ potassium tellurite has been used in selective media for the isolation of a number of naturally tellurite-resistant bacterial species such as the C. diphtheriae. These tellurite-resistant bacteria reduce tellurite
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protein (30 mg/mL) and very high amount of red blood cells (Large+++) found in the urine. The bacterium identified in this specimen is Pseudomonas aeruginosa. This is confirmed by involving many tests and observation‚ such as Gram stain‚ oxidase test‚ catalase test and the observation of colony morphology on Horse Blood Agar‚ MacConkey agar and Tryptic Soy Agar. Pseudomonas aeruginosa is an opportunistic pathogen‚ known as the third most common pathogen associated with nosocomial infections‚ mainly
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life and is synthesized in all cells‚ although the major sources are bone marrow (80%) and the· liver (15%). Haemoproteins include haemoglobin and myoglobin‚ which are the most abundant‚ the mitochondrial respiratory cytochromes‚ enzymes such as catalase
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reduce the oxidative stress in cells and are therefore useful in the treatment of many human diseases. There are various endogenous and exogenous sources of antioxidants. The endogenous sources include antioxidant enzymes “superoxide dismutase‚ catalase‚ glutathione peroxidase‚ low-molecular weight antioxidants” and exogenous sources such as food sources and medicinal plants (Krishnaiah et al.‚ 2011; Kotebagilu et al.‚
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Lab Report: Enzyme Lab Your Name: Samantha Butcher Purpose of this Lab What is the goal of this lab? What question is it trying to answer‚ or what problem is it trying to explain? It is going to explain how a liver’s enzymes break down substances that could be harmful.| Hypothesis After reading the lab instructions - but before starting the lab - record your best “educated guess” about what will happen in the experiment. Give your reasons and outline any assumptions that lead
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Enzyme Activity How does temperature affect enzyme activity? In this practical investigation‚ my aim is to discover how temperature will affect enzyme activity‚ by looking at the rate of reaction. I predict that the higher the temperature will be‚ the faster the reactions take place. However‚ I also think that there will be an optimum temperature‚ at which the reaction will work at its fastest; if the temperature goes beyond that‚ the reactions will stop altogether as the enzymes would have
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Unknown Experiment Introduction: The purpose of this experiment is to distinguish and indentify an unknown bacterium. There are several tests that can help one eliminate and narrow down the options. The most useful test‚ and the very first one done‚ is a gram stain. This test will tell whether the bacterium is gram-positive or gram-negative. After the type of gram stain is identified‚ the tester has a wide array of differentiating tests at their disposal. Based on the results from these
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that interact with the active site and they help increase the rate of reaction. Inhibitors bind and react with the side chains and slow the rate of reaction. In this experiment‚ hydrogen peroxide (H O ) acted as the substrate being broken down while 2 2 the catalase was the enzyme. The hydrogen peroxide formed a decomposition reaction as it was broken down to water (H O) and oxygen (O ). The balanced equation is evident below. 2 2
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Micrococcus luteus‚ Alcaligenes faecalis‚ Clostridium sporogenes‚ and Micrococcus roseus. There were several qualitative tests that could be conducted to determine the identity of the unknown species‚ for example‚ Gram staining‚ Fermentation‚ Catalase‚ Oxidase‚ Starch Hydrolysis‚ Litmus Milk‚ MOI medium‚ and the Gelatin Test. All tests and techniques used were performed in accordance with The Microbiology Lab Manual. Materials and Method: A stock broth culture of the two unknown species #72
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There are many conflicting claims‚ and studies about the cellphone radiation exposure. Some studies suggest that there is no evidence that cellphone can cause cancer‚ others are saying that there are credible amount of evidence that the use of cell phone cause health complication including cancer. According to the article “Dangers of today technology” Recent research shows that cellular phones can cause health complication‚ including cancer. “Heavy long exposure to cell phone radiation increases
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