Title Laboratory 3: Examination of Living Bacteria Introduction Unstained bacteria are difficult to observe because of the lack of contrast between the cells and the surrounding. To see them in an unstained state and also to observe their motility‚ a hanging-drop or a wet mount technique is used. A wet mount is the technique of placing small amounts of specimen in a droplet of water for viewing with the compound microscope. Motility is an inheritable phenotype and is critical for identification
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But there is another way‚ bioremediation. Bioremediation takes specific bacteria or engineered bacteria for the job of processing toxic waste into a more disposable form. Compared to most organisms‚ metabolism is a key component in life‚ metabolism is the ability for the organism to process chemicals to maintain life. These bacteria metabolizes the nuclear / toxic refuse and the waste matter produced by the bacteria is a
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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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Unknown Project I. Introduction The purpose to this lab was to isolate and identify two unknown bacteria from a mixed culture provided to us. This study was done by applying all of the methods that have been instructed on thus far in microbiology laboratory class. Each test performed‚ provided us with some key information about the unknown microbes in question . The identification of unknown bacteria is a time honored part of microbiology courses. It will challenge knowledge and skill in performing
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There are many common types and there are some rare ones which all have varying causes and treatments. Common bacterial infections include strep throat‚ urinary tract infections and E. coli; the different types are caused by many different types of bacteria. Infections are caused by micro-organisms which are known as pathogens‚ there are three sources of pathogens; • Within a person’s body- called endogenous • From other people through touching‚ coughs or sneezes called exogenous • From contaminated
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where one organism takes on a characteristic from another organism (Bacterial Transformation 2013). For this experiment we used the bacteria E. Coli to take in foreign jellyfish DNA which will allow it to change genetic material. This experiment determines the effects that the plasmid pGLO has in transferring the Green Florescent Protein found in a jellyfish into the bacteria. It determines whether or not pGLO acts successfully as a vector to move genes from one organism to the E. Coli organism (Federoff
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Antibiotics are medications that either kill bacteria or prevent them from spreading. They work only against bacteria‚ not the viruses that cause the majority of sore throats‚ colds‚ sinus infections‚ and bronchitis. Most of the infectious diseases are caused by bacteria. Antibiotics transformed medicine. There are two segments of antibiotics‚ early history and modern history. Antibiotics can be defined as a medicine (such as penicillin or its derivatives) that inhibits the growth of
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become more acidic‚ since the desired bacteria would produce lactic acid. The lactic acid would control by inhibiting the spoilage of the cabbage or the cucumber. This was seen by the increase of the acidity in both of the environment‚ which was seen as the pH went from a neutral 7.0 to a relatively acidic 4.0. The drop in the pH from the acid production from lactic fermentation‚ and are know as lactic acid bacteria. (Foster‚ 2009) Typically‚ these bacteria are Lactobacillus spp.‚ Streptococcus
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inhibition‚ where no bacteria can grow just around the paper disc‚ of each plate in millimeters to see how resistant the bacteria are. Then the experimenter takes a tube of tryptic soy but no E. Coli and an incubated plate. The tube needs to be correctly labeled with the culture type and the plate number. After that‚ the bacteria lying along the colonies along the inner edge of the zone of inhibition is selected and taken out using a sterile inoculating loop. With the bacteria on‚ the sterile inoculating
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