BASIC FOOD MICROBIOLOGY 1. Why do we need to identify bacteria in our food? 2. What is microbiology? 3. What is microorganism? Give examples. 4. Bacteria exist in two states. What are they? 5. What are the differences between spore and vegetative cell? 6. Bacteria vary in shape. Name the shape of bacteria that you learn. 7. What are the effects on food caused by spoilage bacteria and pathogenic bacteria? 8. What are the differences between eukaryote and prokaryotes
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Clostridium tetani is a bacteria which can be found in soil and faeces‚ and causes the disease Tetanus. [Human Illnesses]. Clostridium tetani bacteria reproduce by binary fission because they are a bacteria. [St Margaret’s College]. In binary fission‚ bacteria reproduce by splitting themselves in half on a regular basis. [St Margaret’s College]. In ideal conditions‚ the Clostridium tetani bacteria may reproduce by binary fission every 20 minutes. [St Margaret’s College]. To live and reproduce by
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Unknown Lab Report April 25th‚ 2006 Introduction The purpose of this lab was to identify two unknown bacteria cultures using various differential tests. The identification of these unknown cultures was accomplished by separating and differentiating possible bacteria based on specific biochemical characteristics. Whether the tests performed identified specific enzymatic reactions or metabolic pathways‚ each was used in a way to help recognize those specifics and identify the unknown cultures
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Introduction The experiment conducted was based upon the known attributes of two different groups of bacteria‚ those that are gram positive‚ and those that are gram negative. Using a specific staining procedure‚ it is possible to differentiate the two types under a microscope The gram stain method of differentiation is possible because of differences in the cell membrane between the two categories of bacteria. Gram positive cells have an extra thick layer that is made of highly-crosslinked peptidoglycans
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of microbes. The outcome of the search was a new kind of medicine which is known as antibiotics. Antibiotics is a variety of substances that control the growth or kill bacteria. Since bacteria is evolving rapidly and resisting antibiotics due to the overuse of the medicine‚ reducing the need and use would help slow down the bacteria from evolving. There are many things that can be done to help slow down the resistance of antibiotics. If the trend of this resistance keeps growing antibiotics wont be
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____ 1. Bacteria and archaea differ in a.|the presence of a membrane-bound nucleus.| b.|the makeup of their cell walls.| c.|size.| d.|the presence of a cell wall.| ____ 2. Which of the following is NOT found in bacteria? a.|cell wall| b.|membrane-bound nucleus| c.|ribosome| d.|plasma membrane| ____ 3. Unlike bacteria‚ archaea a.|have cell walls.| b.|are prokaryotes.| c.|have two plasma membranes.| d.|are thought to be closely related to eukaryotes.| ____ 4. Bacteria that cause
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to classify bacteria through their chemical nature as well as the physical structure of their cell walls. Through this experiment one would be able to observe either a thick or thin layer of peptidoglycan by the appearance of the bacteria staining either gram-positive blue-purple or gram-negative pink. Question: Is there a subsequent effect of the bacteria when decolorizing with alcohol? Hypothesis: If there is either a removal of the outer cell membrane or dehydration of the bacteria then there
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government who will keep our water unpolluted and free of bacteria and other germs?Do people need government? By: Arianna McCoy In my view people do need government because the government does a lot of things they don’t get recognition for. For example‚ they keep our water fresh. The government makes large investments to keep our drinking water safe. Without the government who will keep our water unpolluted and free of bacteria and other germs?Do people need government? By: Arianna McCoy
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sterilized unless air is allowed to enter the vessel through an opening. Living organisms can spontaneously generate from nonliving matter. True or False? False The scientists usually given credit for disproving the theory of spontaneous generation of bacteria are: Tyndall & Pasteur Miller and Urey’s experiments attempting to recreate the prebiotic environment produced a rich mixture of complex organic chemicals from simple chemicals. True or False? True Miller and Urey’s experiments attempting to
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Unknown Bacteria: Bacillus cereus Brittany Moy Coastline Community College Abstract Bacillus cereus is a Gram-positive‚ facultative aerobic‚ spore-forming‚ rod-shaped bacterium that is widely distributed among the environment. Introduction The reason for identification of unknown bacteria was to help students recognize different bacteria through different biochemical tests and characteristics. This is important in the medical field because identification of unknown bacteria can help
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