LAB 5: Coliform bacteria in surface waters I. Introduction Many organisms‚ including humans‚ have symbiotic bacteria in their guts that aid digestion. Symbiosis is an intimate relationship between different organisms in which both the host organism‚ e.g. the human‚ and the symbiote‚ e.g. bacteria‚ benefit from each other. In this case‚ the bacterium gets a favorable environment and food source in the intestines of a human. In return‚ these bacteria improve the digestibility of food through
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Dangerous Waters Fecal Coliform Table of Contents Introduction……………………………………………………………………………………………………3 Purpose…………………………………………..………………………………………………………………3 Hypothesis………………………………………………………………………………………………………4 Materials…………………………………………………………………………………………………………4 Procedures…………………………………………………………………………………………….….…4-5 Variables…………………………………………………………………………………………………………5 Results…………….………………………………………………………………………………………………6 Analysis……………………………………………...………………………………………………..………6-7 Conclusion…………………………………………………
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Experiment No. 03 Date: Name of the experiment: Aerobic plate count (APC) and total coliform count of supplied yogurt sample. Purpose: To determine the aerobic plate count and total coliform count of the supplied yogurt sample. Principle: Yogurt squeezed or extracted from milks are more or less acidic‚ depending on the product‚ the pH generally ranges from about 2.4-4.2 and contain sugar (4.7g)‚ fat
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dangerous diseases that can be found on flowing water. These diseases are very harmful not only to our digestive system but also to all of the parts of our body. These diseases can kill many people that are drinking water on the tap water and mostly on the drinking fountain; people might drink on a drinking fountain which is dirty because of the different people that are drinking and spiting their saliva on to it‚ bacteria can easily contaminate the water that is coming out from the drinking fountain
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FOR MEMBERS OF THE COLIFORM GROUP* 9221 A. Introduction The coliform group consists of several genera of bacteria belonging to the family Enterobacteriaceae. The historical definition of this group has been based on the method used for detection (lactose fermentation) rather than on the tenets of systematic bacteriology. Accordingly‚ when the fermentation technique is used‚ this group is defined as all facultative anaerobic‚ gram-negative‚ non-spore-forming‚ rod-shaped bacteria that ferment lactose
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Abstract Because water serves as vehicles in the transmission of many pathogens‚ coliforms are commonly used as indicators to monitor the quality of water. I hypothesized that Lake Thoreau would have more fecal coliforms because it is a more stagnant environment meaning more animals can stop their and release their feces‚ and also the animals that reside there continue to reproduce‚ leaving no exit for their excretions. By using the MPN test‚ I was able to detect the coliforms from the fermentation
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BACTERIA Period: 4 Characteristics: 3 major shapes Cocci Basilli Spirilla 3 major components Mesosomes flagella Plasmids Growing Up: Bacteria can obtain energy through phototrophs(sunlight)‚ lithotrophs(inorganic compounds)‚ and organotrophs(organic compounds) Marriage/Reproduction Binary Fission: The process by which all bacteria reproduce. It results in the separation of a single cell into two. Transformation: genetic alteration
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An Introduction to Water Analysis February 1 and February 8 2011 Aim and Objective: The aim of this experiment was to determine the pH level of an unknown HCl solution. While doing so‚ we would also be receiving a good and fundamental understanding of how to use modern lab equipment to determine the chemical and physical properties of water bodies. Method: Make sure safety gear is always on and equipment is always clean. Part 1- Direct Analysis by pH Test Kit We grab a 50ml beaker
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Bacterial Contamination April 15‚ 2013 Bacteria Contamination The definition of bacterial contamination is food contamination refers to foods that are spoiled or tainted because they either contain microorganisms‚ such as bacteria or parasites‚ or toxic substances that make them unfit for consumption This is very serious and people should take more precaution‚ food contamination is a serious because it results in foodborne diseases that each year affect an estimated seventy-six million
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“Fighting Invisible Killers” Scholastic Scope: The Language Arts Magazine January 2014 Edition‚ pages 5-9 Bacteria surround us every day. These little “bugs” are invisible to the eye and most do not harm us. Many are necessary for us to survive‚ like the bacteria in our stomachs and intestines that help us to digest food. But some bacteria are very dangerous to us. Addie Rereich became very sick in May 2011‚ when she was 11 years old. What started as something that her doctors and mother
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