Bacterial growth is the division of one bacterium into two daughter cells in a process called binary fission. Providing no mutational event occurs the resulting daughter cells are genetically identical to the original cell. Hence‚ "local doubling" of the bacterial population occurs. Both daughter cells from the division do not necessarily survive. However‚ if the number surviving exceeds unity on average‚ the bacterial population undergoes exponential growth. The measurement of an exponential bacterial
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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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Spontaneous bacterial peritonitis: an acute bacterial infection of ascites fluid. Although a bacterial infection the infecting agent is not easily identified. Spontaneous bacterial peritonitis is commonly seen in patients receiving peritoneal dialysis due to contamination of dialysate. Signs and symptoms: a wide range of symptoms including diarrhea‚ worsening encephalopathy‚ ascites that do not improve following administration of diuretic medication‚ worsening or new renal failure and ileus
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The litmus paper and the pH probe determined the salt solutions’ pH levels. When the blue litmus paper was dipped into ammonium chloride‚ the paper was changed to red whereas the red litmus paper stayed the same indicating that the solution was acidic. PH levels shown through pH probe also ranged between 5.5 to 6.0. Yet when in the presence of sodium acetate blue litmus stayed blue whereas red litmus turned blue‚ indicating its basicity. pH probe also showed the solution’s pH varied between the
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Epsom salt have many uses‚ including use as bath salts‚ as a laxative and as a plant nutrient. Epsom salt contains hydrated magnesium sulphate which has the formula MgSO4.xH2O. Experiment to find the value of x in a pure sample of hydrated magnesium sulphate. The method i will use is heating a known mass of magnesium sulphate to remove the water of crystallisation. x is found by weighing before and after heating to find the mass of the water then using the moles calculations to find x. The source
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Investigation of a Hydrated Salt Table of Calculations: ³ Unknown #2 Weight of hydrate before heating .9989g Weight hydrate after heating .6534g Weight of water .3455g Mole of water in hydrate .0192mol Mole of anhydrous salt: CuSO4 .004094mol CuCl2 .004859mol CoCl2 .005033mol Mole ratio of water to each of the anhydrous salts: CuSO4 4.69
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Introduction: Bacteria are microscopic‚ single-celled organisms. Their genetic information is encoded in one large chromosome. It can also be found in plasmids which are small circular pieces of DNA that contain important genetic information for the growth of bacteria. In nature‚ this information is often a gene that encodes a protein that will make the bacteria resistant to an antibiotic. The reason for this protein being made within the bacteria is because of how bacteria usually grow in the same
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Modeling Effective Dose: Salt Tasting lab Purpose The purpose of this lab is to see at what measurements (of salt) can the salt be detected by taste. Abstract The science of toxicology is based on the principle that there is a relationship between a toxic reaction (the response) and the amount of poison received (the dose). An important assumption in this relationship is that there is almost always a dose below which no response occurs or can be measured. A second assumption is that once a maximum
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Lab Report (Scientific Paper) 2: Bacterial Transformation;DNA Extraction Part I & II:Total Genomic Extraction & Plasmid Extraction;Electrophoresis By:Chris Foster Abstract: We conducted three experiments that included a Bacterial Transformation‚ a two process DNA extraction‚ and a final procedure using gel electrophoresis. The Bacterial Transformation lab was performed to prepare the plasmid into a bacteria and to use that bacteria to amplify the plasmid in order to make large quantities
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Bacterial Transformation Lab Introduction: In this experiment we transformed a strain of E. Coli bacteria without antibiotic resistance with plasmid DNA. This plasmid produces a fluorescent green glow under black light due to the gfp(green fluorescent protein) as well as antibiotic resistance. E. Coli cells will be plated on an agar medium‚ some with and some without the antibiotic ampicillin. Only bacterial cells that contain the plasmid will survive the ampicillin and produce the green glow
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