Olivia Teasdale Mrs. Gaspar SBI3U1 10/07/13 The Effect of Disinfectants and Antiseptics on Bacteria Growth Abstract The purpose of this lab was to determine the effect of disinfectants and antiseptics on bacterial growth. By observing the effects of 5 different inhibitors including alcohol‚ bleach‚ soap solution and distilled water‚ it was determined what antiseptic or disinfectant was able to best inhibit this kind of bacterial growth. Nutrient Agar was poured into a Petri dish with four quadrants
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through the process of gene transfer. Gene transfer involves the insertion of a gene into an organism. The gene to be inserted is usually contained in a plasmid‚ which is relatively small‚ circular non-chromosomal DNA molecule typically found in bacteria. Once the plasmid containing the gene is inserted into the organism‚ it is absorbed into the organism’s own genetic code. After this occurs‚ the newly introduced gene begins coding for proteins‚ giving the organism a new trait. This process of genetic
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10.19.2011 TITLE: The Importance of Oxygen for Life PURPOSE: To determine whether test tubes filled with bacteria‚ a few salts‚ distilled water‚ and glucose would grow in the presence or absence of oxygen. By adding oxygen to certain tubes and withholding it from other tubes‚ one can determine which bacteria grow the most efficiently. HYPOTHESIS: The test tubes of bacteria with oxygen will grow and thrive over the test tubes without oxygen. METHODS: Using the data shown in Table 7-A-1
Free Adenosine triphosphate Oxygen Cellular respiration
microbiology. Furthermore‚ bacteria are transparent and cannot be seen through the microscope. For that reason‚ Gram staining is an important tool for distinguishing between two main types of bacteria Gram-positive and Gram-negative. The Gram stain differentiates the Gram positive and gram-negative on the basis of their cell wall structure.(Menard‚ et al.‚20150) Most bacteria gram positive or gram negative but they are a few gram variable bacteria and very small bacteria without a cell wall that do
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antibiotics are continually used as bacteria grows exponentially more resistant to them then eventually society will fall back into an era without the readily use of antibiotics. Fortunately the superbug is not currently immune to all antibiotics as some forms of antibiotics can still treat the bacteria. In years to come the superbug will become increasingly hazardous to mainstream society as it grows faster than scientists can create medication for. Bacteria are the main source for all diseases
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Introduction To differentiate between bacteria‚ fungi and yeast‚ we plant four different microbes in plates under the same environment for one week and compare the growth of the four microbes by macroscopic and microscopic observation. Meanwhile‚ the diversity of bacteria and fungi in humans‚ the environment and wood could be observed. In addition‚ the four substrates are cultured in two media‚ MEA and NA‚ under the same condition. Thus‚ how nutrients affect the growth of bacteria and fungi could be achieved
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research shows the rise in antibiotic resistant pathogens through horizontal gene transfer. Located in the bacteria are plasmids. They are independent‚ self-duplicating‚ and allow bacteria to perform new functions/generate new products. Basically plasmids help their hosts to stop the action of antibiotics and become resistant. “Gene transfer must be integral and critical to the overall survival of bacteria‚ providing a way for them to adapt to difficult conditions” (Levy 2002‚ 83). Horizontal gene transfer
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genetic transformation that was used in lab and mainly used due to the single celled nature of bacteria. In this lab‚ the engineered pGLO plasmid is integrated into E. Coli bacteria‚ and adds the genes which code for the proteins GFP in the modified bacteria’s genome (Hanahan‚ Studies on transformation of Escherichia coli with plasmids‚ 1983). To see the reaction of this plasmid on the cells‚ bacteria treated with the plasmid were grown on two separate agar plates containing LB nutrient broth and
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donors. It has an unusual genus since it has a property of the Archea which is uncommon in the domain bacteria. Sulfate-reducing bacteria like Thermodesulfobacteria fall into more than 20 separate genera and can be classified by the types of substrates that they use. They are divided by their ability to use acetate as a source for electrons. Thermodesulfobacteria are in Group 2 of sulfate reducing bacteria because it can use acetate and some fatty acids. Thermosulfobacteria are also important
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reasons. There are always studies available to prove any point‚ especially one where chemically doused foods are more nutritious. But then‚ like bacteria in the throes of death‚ food manufacturers mount a valiant effort in trying to convince those near-at-hand that what they say is valid. But‚ be that as it may‚ the choice is ultimately made individually. Bacteria are‚ to a great extent‚ resistant to the effects of irradiation because of their ability to repair their damaged DNA. Sometimes‚ however‚ their
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