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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Modeling bacterial growth is important in maximizing the efficiencies of biological processes. Although there are many different methods of modeling bacterial growth‚ this experiment focuses on the Monod equations. However‚ in order to use the Monod equations‚ the maximum growth rate and Monod constant must be found. Here we show how the maximum growth rate and Monod constants can be obtained for Escherichia coli using M9 media in a bioreactor at 37 °C and 500 RPM. The maximum growth rate is also
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In the Philippines‚ coffees and milk tea shops became prevalent‚ not just in upper and middle class professionals‚ but also to high school/college students looking for an ambiance‚ a cool place to hang around while enjoying a sip of their favourite coffee or milk tea products. Nowadays‚ there is a new tea craze sweeping the metropolis. People line up to savor this new incarnation of tea. Some even spend more than 30 minutes just to drink this new fad. It is milk tea. Nowadays‚ beverages are
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Title: Chapter 7: Bacterial Growth Purpose: The purpose of this experiment is to observe the bacterial growth of Escherichia coli under various conditions. Physical factors and nutritional requirements determine the overall concentration of the bacteria. Along with the use of a spectrophotometer and the technique of serial dilution‚ countable colonies can be obtained. Results are plotted on a semi-log graph in order to observe the different growth curves corresponding to optical density (cell
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Fighting Bacterial Growth The purpose of this lab was to determine the effectiveness of antiseptics‚ disinfectants‚ and antibiotics on bacteria. The hypothesis was that if bleach was used‚ it would be the most effective because bleach is commonly used to clean and disinfect various things. The variables that were tested were antibacterial soap and Scope mouthwash for the antiseptics; bleach and ammonia for the disinfectant; and Cipro‚ erythromycin‚ and tetracycline for the antibiotics. All of these
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Milk We deserve the same rights as they do. “My name is Harvey Milk‚ and I’m here to recruit you‚” were the famous words of Harvey Milk‚ the first openly gay member of the San Francisco Board of Supervisors. He was elected after 3 times of losing the election because there weren’t enough people who support gay rights in San Francisco at the time. Although times have changes and many people are more open minded and are more supportive of LGBT communities‚ the LGBT communities still do not
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immediate threat to human health. [1] In this article we explore contamination from this particular strain of E. coli bacteria (O157:H7) and enteric viruses‚ their potential threats and how to test the water for such contamination. Bacterial Contamination Bacterial contamination of water is usually in the form of coliform bacteria. Coliform bacteria live in soil/vegetation and in the gastrointestinal tract of animals and humans. They thrive in warm‚ wet and dark places.
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Milk‚ milk‚ milk! I understand you want to know whether chocolate milk should stay or go. Well‚ I believe that it should stay because of the following reasons. One chocolate milk is just as good for you as white milk. Second kids will not drink white milk. Third what will happen if it is removed from school? First chocolate milk is as good for you as white milk. According to “US Department Of Health” kids need about 1‚300 milligrams of calcium a day and chocolate milk can give kids that‚ same as
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Succession Lab INTRODUCTION: The purpose of our lab was to begin to understand the rates of succession. Succession is a number of persons or things following one another in order or sequence. Considering that all living things follow some sort of order‚ Joey Collins‚ Brian Carman‚ Chris Broadwater‚ Marisa Grondin‚ and I attempted to figure the succession rates of two different forests. In order to do this we used the forest behind the elementary school and the forest behind the track‚ by the
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with said substances. Background Information Milk is a nutrient-rich liquid found in the mammary glands of mammals. It is the primary source of nutrition for all newborn mammals‚ and is made up of water‚ lactose‚ proteins‚ and minerals. Curds are a solid dairy product achieved by the curdling‚ or coagulation‚ of milk. Historically‚ curds are most often used in the production of cheese. Curds are achieved by the denaturing of proteins in milk‚ particularly caseins‚ which is a protein group that
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