While microbes are often viewed negatively due to their association with many human illnesses‚ microbes are also responsible for many beneficial processes such as industrial fermentation (e.g. the production of alcohol and dairy products)‚ antibiotic production and as vehicles for cloning in higher organisms such as plants. Scientists have also exploited their knowledge of microbes to produce biotechnologically important enzymes such as Taq polymerase‚ reporter genes for use in other genetic systems
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The reasons range from the knowing the causative agent of a disease in a patient‚ so as to know how it can be treated‚ to knowing the correct microorganism to be used for making certain foods or antibiotics. This study was done by applying all of the methods that have been learned so far in the microbiology laboratory class for the identification of an unknown bacterium. Hypothesis By slowly narrowing down the bacteria by each test‚ I will be able to conclude the unknown bacteria by its special
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Discovery of Antibiotics “Penicillin” As we know‚ the 19th and 20th centuries were among some of the most drastic years the United States experienced. While we often look at it as a time of bad and wrong decisions‚ there were many positive things that came from them. The most prominent of them were the number of discoveries and inventions that took place and were of great benefits then and now. One of those was the discovery of antibiotics in 1928‚ by Dr. Alexander Fleming. Before this discovery
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Theodor Wilhelm Engelmann was a German microbiologist whose 1882 experiment measured the effects of different colors of light on photosynthetic activity and showed that the conversion of light energy to chemical energy took place in the chloroplast. In 1881‚ he observed the movement of bacteria towards the chloroplasts in a strand of “Spirogyra” algae. Engelmann hypothesized that the bacteria were moving in response to oxygen generated by the photo synthetically active chloroplasts in the algae.
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Ch. 1 Prokaryotes = bacteria ‚ archaea Eukaryotes = Fungi‚ protozoa ‚ algae (Growth:: Mitosis有絲分裂) Bacterial cell → Bacillus(rodlike) ‚ cocus (spherical)‚ spiral (curved) *P.S. 有時會star-shaped or square → 出現既形式: pairs‚ chains‚ clusters cell walls of bacteria → peptidoglycan (carbohydrate & protein complex) cell walls of plant and algal cell → cellulose Growth::Binary fission = bacteria reproduce by dividing into two equal cells bacteria 吸收nutrients from dead / living organisms/ photosynthesis
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The Effectiveness of Antimicrobial Agents Bacteria: Clearasil and Proactive Veronica Hillgren 11/16/12 FRI AM Question/ Hypothesis The purpose of my experiment is to find and compare the efficiency of Proactive™ and Clearasil™ acne products on certain bacteria. For myself‚ Clearasil™ works better than Proactive™ does when exposed to my pores‚ which are infested with bacteria. However‚ Proactive™ is widely known and has a large amount
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Jacob Moser EGT1 Task 4 Student #000197021 Task 309.2 Cultural Sensitivity Cultural sensitivity is vital to remember when any firm does any business in a foreign market. Certain strategies and procedures used in the United States may not translate the same way in other countries or have the same impact. Other areas in the world operate their businesses with different priorities and in different cultures so it is crucial to consider how these differences may affect how business is done. Ethical
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THERMAL SENSITIVITY REPORT METHOD Measuring oxygen concentration: One glass vial was filled with 7-13 Artermia. After incubation‚ uncapped at 15oC for 5 minutes‚ the glass vial was sealed underwater and incubated again for another 5 minutes. After this 5-minute incubation‚ a reading of oxygen concentration was taken via a fibre-optic cable held onto a sensor spot on the vial. The vial was then returned to the incubation bath. The first reading represented time zero and subsequent readings
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be able to treat and care for them properly‚ to knowing the correct microorganism to be used for making certain antibiotics as well as proper dosages‚ down to knowing all microbes associated with consumed foods such as plants and animals in case of an allergen or a contamination outbreak. This analysis was done by utilizing all of the proper methods taught thus far in the microbiology laboratory for the identification of two unknown bacteria. An unknown labeled as number 3 was given out by the
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Open Reading Frames * (ORFs) are regions with no stop codons. All genes reside in long open reading frames * Note that stop codons in other reading frames have no effect on the gene. * Can be searched in the genome sequence. Valid only for prokaryotes and lower eukaryotes. Protein Sequencing vs. DNA sequencing * We compare protein sequences‚ not DNA‚ because protein is more conserved in evolution than DNA * The organism’s survival depends on the protein being
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