Micrococcus is the a genus of a spherical shaped bacteria in the family of Micrococcaceae. Micrococcus is categorized as a aerobic gram positive cocci that are found in pairs, clusters or tetrads but never in chains. They are normally found on the human that even have an essential in keeping a balance among the skin flora(britannica.com). Medical-dictionary.thefreedictionary.com defines skin flora “as a population of pathogenic and innocuous microorganisms (MOs)normally living on skin, and within
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1. Cut the lamb liver into 1- 2 centimeter pieces until there is a sufficient amount of catalase that can be extracted 2. Place approximately 12 ice cubes into the blender and then the liver (the cold temperature ensures that the enzyme does not denature while being blended) 3. Add approximately 200 ml of water into the blender using a graduated cylinder 4. Add 20 ml of sand into the blender (this will help smooth out the liver and make it easier for the liver to blend) 5. Blend all the materials
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Title: The effect of the concentration of hydrogen peroxide on the rate of reaction of catalase from potato Focus question: How will the concentration of the substrate hydrogen peroxide affects the rate of reaction of the enzyme catalase. Apparatus/Materials: Goggles, Lab coat, Potato, Core, 100mL beaker, Hose and stopper, Different concentrations of hydrogen peroxide (3.0%, 6.0% and 9.0%), Gas collecting tube Variables: Dependent variable: (1) rate of oxygen production Independent variable:
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either catalase or superoxide dismutase to degrade hydrogen peroxide, which is toxic to the bacterial cells (Cappuccino and Sherman 2014g). The production of catalase in an organism can be determined by adding hydrogen peroxide to the bacterial sample and identifying the presence of oxygen gas in the form of bubbles. The absence of bubbles after adding hydrogen peroxide to the bacterial sample indicates a negative result and indicates that the organism does not produce the enzyme catalase (Cappuccino
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Enterococcus faecalis, and unknown #2. The results of unknown #2 showed that this bacterium was non-hemolytic, catalase positive, coagulase negative, was able to grow on but not ferment mannitol salt, was sensitive to bacitracin but resistant
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Optimal Growing Conditions for Russet Potatoes Lauren Mendoza Lab Group: Benjamin Lowe, Winifred Zee, Courtney Machac Introduction The purpose of this lab was to find the optimal growing conditions for Russet potatoes by conducting a series of experiments. Here in this experiment we will look at NaCl concentration, pH levels and wavelengths to determine which ones are more beneficial for growth of Russet Potatoes. In Lab 2.1 we looked at levels of NaCl in hopes to find the isotonic concentration
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in both tubes turned red, indicating a pH at or below 4.4. G. Which of the organisms, if any, produced measurable acidic byproducts? E.coli and s. epidermidis both produced measurable acidic byproducts. H. What is the cellular role of catalase? The role of
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heterochromatin inactive. Michael Kent (2000) explains ‘the nucleus also contains one of more nucleoli. These manufacture ribosomes’. In the nuclear envelope in a substance called nucleoplasm or karyoplasm and it similar to cytoplasm. It is mainly water, enzymes and
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When a specimen, which may be urine, stool, other body fluid (CSF, synovial, pleural), as well as swabs from a wound, surgical incision, or specific area of the body (vaginal, eye, nares)is brought to the micro laboratory for culture it is inoculated on a nutrient plate or in a nutrient broth for growth, as well as specific complex, selective, or differential types of media. Some media (agar plates) contain substances that enhance the growth of certain organisms, while inhibiting the growth of
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aerobic metabolism generates the toxic byproduct hydrogen peroxide, obligate aerobes must produce the enzyme catalase which breaks down hydrogen peroxide to water and oxygen gas. 2. Obligate anaerobes: Not only do these organisms not require oxygen, they are often killed in its presence. Because anaerobic metabolism does not generate hydrogen peroxide, obligate anaerobes generally do not produce catalase. The causative agent of botulism, Clostridium botulinum is an obligate anaerobe. Since the canning
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