September 23‚ 2012 Introduction: Bacteria are everywhere. Some can be seen with the naked eye and some require a microscope but how do we distinguish one kind of bacteria from another? To answer this question‚ we were required to complete three bacterial labs that helped us to understand what microorganisms are and how to identify and classify them. Thus‚ the main purpose of this project is to identify our unknown microorganisms‚ more specifically‚ our unknown bacteria. There are many ways to distinguish
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There are three types of microorganisms that cause food spoilage -- yeasts‚ moulds and bacteria. Bacteria are round‚ rod or spiral shaped microorganisms. Bacteria may grow under a wide variety of conditions. There are many types of bacteria that cause spoilage. They can be divided into: spore-forming and non-spore-forming. Bacteria generally prefer low acid foods like vegetables and meat. In order to destroy bacteria spores in a relatively short period of time‚ low acid foods must be processed for the
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Report Microbiology Introduction Bacteria can be found almost anywhere. For human life‚ some help us‚ some hurt us‚ and others are neutral. It is now known that good bacteria‚ or normal microflora‚ can reach 1014 microbial cells. This is far more than the 1013 cells that make up the human body (Tannock‚ 1995). The total number of bacteria on Earth is estimated to be around 4-6 x 1030 (Horner-Devine‚ 2004). It is important to know the extent of bacteria‚ how they live‚ and how they are transmitted
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plasmid when it enters. To start‚ three Petri plates containing agar are needed. On each plate there is a control group and a treatment group; the treatment group being the one with the plasmid. Before the plasmid is put with the E. coli‚ first the bacteria are “stressed out” by warming them up in a hot water bath and cooling them down very rapidly in ice. The first plate consists of Luria Broth (LB)‚ the second plate consists of LB and the antibiotic ampicillin (amp)‚ and the last one contains LB‚
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below: Unit 22: ICO2 Causes and Spread of Infection Learning Outcomes Assessment Criteria Question it has been covered in: 1. Understand the cause of infection 1.1 Identify the differences between bacteria‚ viruses‚ fungi and parasites Question 1 1.2 Identify common illnesses and infections caused by bacteria‚ viruses‚ fungi and parasites Question 1 1.3 Describe what is meant by infection and colonisation Question 2 1.4 Explain what is meant by ‘systemic infection’ and ‘ localised infection’ Question
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Rithika: We can test our hypothesis on the cleansing power of antibacterial soap by using both petri dishes and testing the amount of bacteria on our hand before and after using the soap. We will be able to calculate the amount of colonies of bacteria by using the petri dishes. Calculated the difference between both samples will help us to see whether the antibacterial soap will really help us to defeat more bacteria than the regular soap. If the hypothesis is correct‚ what would you predict the outcome of the test to be
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sugarcane bagasse‚ tree foliages and cakes of oil seeds like groundnut‚ cotton‚ mohua‚ neem and mustard. The efficiency of ruminants to utilize such a wide variety of feeds is due to highly diversified rumen microbial ecosystem consisting of bacteria (1010–1011 cells/ml‚ representing more than 50 genera)‚ ciliate protozoa (104–106/ml‚ from 25 genera)‚ anaerobic fungi (103–105 zoospores/ml‚ representing five genera) and bacteriophages (108–109/ml)1. These numbers might even be larger as majority
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and why disease-causing bacteria grow and spread‚ so that you are able to prevent food-borne diseases. Kinds of bacteria 1. Beneficial bacteria These are helpful to us. They can enhance flavor of butter‚ yoghurt‚ and cheese. 2. Undesirable bacteria These are bacteria that are responsible for food spoilage. 3. Disease-causing bacteria or pathogens These are bacteria that are most of the food-borne illnesses. The only way to protect food against pathogenic bacteria is by proper hygiene and
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produces genetically identical copies of the original cell. Some prokaryotes transfer genetic material through sex pili from a donor to a transformation ‚ prokaryote picks up from the environment free pieces of DNA secreted by live bacteria or released by dead bacteria then incorporates the genes into its own genetic makeup. In transduction‚ a virus serves as a vector in transporting genes from one organism to another. The size of prokaryotic cells range from about 0.2 to 10 micrometers in diameter
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are only dreams. One can dream all we like but without commitment‚ nothing can be achieved. Based on the article given‚ it proves that by devoting particular attention to pharmacodynamics‚ it enables one to understand the interaction between bacteria and antibiotics better. Such great understanding would then allow for manipulation of the drug usage‚ thereby strengthening our understanding of how to optimise antibiotic performance. Over the past decade‚ there have been numerous occasions where
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