A. The typical human mouth contains a writhing orgy of bacteria. Most of these. Most of these microscopic organisms are bengin‚ and some are even beneficial‚ but one particular variety is a conspicuous troublemaker: Streptococcus mutans. These ubiquitous bacteria thrive on sugars in the mouth‚ which they consume while excreting lactic acid. This acid is responsible for the great majority of tooth decay in humankind because it erodes the enamel and dentin of the teeth. B. A Florida-based company
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tea on the growth of E. coli bacteria cultures Kierstin Barker‚ Melissa Bischak‚ Jackie Tyszkiewicz‚ Errin Enany September 25‚ 2012 Abstract: This study was carried out in order to investigate whether black tea has antimicrobial properties as stated in Steven Johnson’s The Ghost Map. If tea does have antimicrobial properties‚ then it could aid in warding off waterborne diseases. We believed that if black tea is steeped in boiled water‚ then the amount of bacteria exposed to this solution would
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An Autobiography of an Unknown Indian by Nirad C. Chaudhuri. In this book the author has depicted his “Early Environment” in book -1 which he talks about his “ My birth place”‚ “ My Ancestral village” where he has pass his old days‚ “ My Mother place” where he had lived for sometimes and also describe about “England” as he was very fascinated of it. So as the same he talks about his “parents and early 12 days” and something about “Nationalism” in book -2.In book -3 he talks about “Calcutta” how
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Describe how Bacteria decode its genetic information to produce proteins? Intro(10mins) Bacteria belongs to a group of organism that lacks cell nucleus and membrane bound organells. This group of organisms are termed as prokaryotes. Prokaryotes follows the central dogma of molecular biology first proposed by Francis Crick in 1958 to synthesize proteins from mRNA through a process called translation and the mRNA is being synthesized from the DNA by another process called Transcription.
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How bacteria can affect the lives of humans and other organisms Bacteria can enter the body in 3 different ways. Through the gas exchange system‚ by breathing in pathogens‚ most are trapped in the mucus lining in the lung epithelium. There are also cilia that move the mucus up the trachea and into the mouth where it is removed. However some bacteria is still able to reach the alveoli where they invade cells and cause damage. Another way it can enter the body is through the skin‚ if the skin is
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The Effectiveness of Common Acne Products against P. acnes Bacteria Kathryn Henshaw Taunton High School Honors Chemistry I Mr. Osowick January 23‚ 2013 Table of Contents Abstract3 Background Research4-9 What is Acne Vulgaris? 4 How does Acne Vulgaris Form?6 How is Acne Vulgaris Treated?8 Purpose10 Hypothesis10 Materials10 Procedure11-14 Data15-16 Results17 Conclusion18-19 Figures20-22 References23-24 Abstract Acne is one of the most common pests to human beings. Although
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composition that is known. On the other hand‚ Complex media is a complex media that is unknown and is usually not a chemically pure. 2. Classify the media used (YEB‚ NB‚ GSB and ISB) as either complex or chemically defined. (4) YEB Complex NB Complex GSB Chemically define ISB Chemically define 3. Explain why all the bacteria grow so poorly in ISB? (1) ISB is an inorganic synthetic broth in which bacteria is a heterotrophic organism that require
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Hands of Persons Unknown Book Critique At the Hands of Persons Unknown‚ a novel by Philip Dray‚ is a decisive explanation to the past multiple acts of lynching in America. In the past‚ Caucasians were seen as superior to African Americans. Lynching was one of the many acts that gave whites this superiority. The gruesome act of lynching was overlooked by the nation as a whole. People didn’t think anything of it and some seen it as entertainment. At the Hands of Persons Unknown could be seen as a
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Table of Contents Contents Page No. Task 01 1.1How Archaea is similar to Eukaryotes and how they differ from Bacteria………..02 1.2: Importance of co-ordination between sub cellular organelles in Eukaryotic cell‚ using protein synthesis and transportation within cells…….…………………04 1.3 Explain the role of different types of transporters in cell membrane……………....07 Task 02 2.1 Explain how in each stage of
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Determination of an Unknown Concentration of Potassium Manganate using Colorimetry Introduction The purpose of this experiment is to conclude the concentration of an unknown solution using colorimetry to plot a calibration curve. Colorimetry measures the absorption of light at wavelengths within the visible region of the electromagnetic spectrum. It can be used to identify the unknown concentration of a solution in reference to a solution of a known concentration. When a solution appears
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