as well as a Gram(-) from the species that were given and the experiment proceeded as follows. METHODS The two streak plates made from the mixture of unknown bacteria showed two different colony morphologies. Colonies of Bacteria A were translucent in color‚ circular in form‚ with entire margins and a smooth surface. Colonies of Bacteria B were cream colored‚ irregular in form‚ with undulate margins and an umbonate surface. Two different morphologies allowed Gram stains to be performed on each of
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food supply system in America may be one of the safest in the world‚ but there are definitely some holes in the safety net that Americans should be aware of before they conclude that everything in the food supply is safe. Many different types of bacteria can now be found in and on the food we buy‚ and it is now part of the consumer’s responsibility to take precautions in preparing and storing food to
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Title Gene expression with E.coli bacteria through means of transformation with plasmid DNA Abstract Science has discovered that with gene expression and genetic engineering‚ DNA and organisms can be manipulated like never before. This has become an extraordinary discovery because it has lead us to countless medicinal products and cures for diseases and continues to serve as a great asset as research continues. This lab consisted of introducing a plasmid
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Agent for Escherichia coli INTRODUCTION a. Background of the Study We all know that bacteria are everywhere. Bacteria are microscopic organisms whose single cells have neither a membrane-enclosed nucleus nor other membrane-enclosed organelles like mitochondria and chloroplasts. One example of bacteria is E .coli is a bacterium that is commonly found in the gut endotherms. E. coli and related bacteria constitute about 0.1% of gut flora‚ and fecal-oral transmission is the major route through
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Cody Trezise 06 october 2011 Chain of infection & how bacteria grow. Reference: http://faculty.ccc.edu/tr-infectioncontrol/chain.htm In this essay I am going to be describing and explaining n about how pathogenic organisms grow and spread‚ by explaining each stage of the chain of infection‚ step by step and what they involve. This representive is used to help us understand the infection progression. A circle of linked components represent what happens in the cycle of infection
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from the latin verb "fevere" which means "to boil". FERMENTATION PROS • Extended shelf life of food (ex. Cheese) • Eases Digestion (ex. Wild rice) • New [better] flavours (ex. Chocolate) CONS • Can be unpredictable (i.e. bad bacteria win the battle) • New [worse] flavours (ex. Mouldy bread tastes terrible) WHAT ARE FERMENTED FOODS? Foods or food ingredients that rely on microbial growth as part of their processing or production METABOLIC ACTIVITIES OCCUR DURING
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Any species of bacteria can turn into a superbug. A superbug is a strain of bacteria that is resistant to antibiotics. According to webmd.com "Every year‚ about 2 million people get sick from a superbug‚ according to the CDC. About 23‚000 die. Earlier this year‚ an outbreak of CRE (carbapenem-resistant enterobacteriaceae) linked to contaminated medical tools sickened 11 people at two Los-Angeles area hospitals. Two people died‚ and more than 200 others may have been exposed." This has become a serious
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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 chemicals were used on the bacteria M. luteus. Two Petri dishes were covered in the bacteria and split into four
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Introduction The working hypothesis being tested is if any of the three products; Scope Mouthwash (Scope)‚ LISTERINE® Antiseptic Mouthwash (Listerine)‚ Bactine Original First Aid Liquid (Bactine)‚ and Povidone-Iodine Solution‚ 10% Topical Microbicide Antiseptic (Iodine) are an appropriate antiseptic to can kill a sample bacterial contaminant found in the local environment‚ and if so‚ which is the most effective? The purpose of this experiment is to determine the antibacterial effectiveness of Scope
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Abstract: It is important to be able to identify pathogenic bacteria that may be causing harm. Tomato crops can be affected by several different pathogenic bacteria. By using Koch’s postulates‚ it was determined that Pseudomonas syringae was the bacteria causing rot. There are four criteria that must be met when using Koch’s postulates. They are that the organism must be fund in all infected‚ the organism must be isolated in pure culture then once reinnoculated in a healthy host‚ must cause the
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