and hinder its lifespan. In order to survive and grow‚ microorganisms require a source of energy and nourishment. Bacteria are the most primitive forms of microorganisms but are composed of a great variety of simple and complex molecules and are able to carry out a wide range of chemical transformations. Depending on their requirements and the source of energy used they are classified into different nutritional groups. Most microorganisms grow well at the normal temperatures favored by man‚ higher
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multiplication of different pathogenic microorganisms in the body-such as fungi‚ bacteria and viruses- the body’s reaction to it and the defense mechanisms it activates to counter these pathogens or the toxins they produce. Infections can range from simple to complex ones that can be fatal or debilitating‚ but because of the continuous researches and studies to protect the human race‚ antibiotics were discovered. Antibiotics inhibit the release of toxins of these microorganisms or simply fight against them
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gyMicrobiology: is a study of microorganisms (microbes‚ germs) and their activities Microorganism: An organism or a virus too small to be seen without a microscope (smaller than 0.5mm) Misconceptions of Microorganisms * All microorganisms are pathogenic (disease producing) FALSE * The majority of bacteria are harmless and beneficial TRUE Aspects of microbiology * Basic biological science * About living cell and how they work * About microbial diversity and their evolution
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(etiology) and manner in which disease develops (pathogenesis) - Also concerned with structural and functional changes brought about by disease and final effects on the body 2. Infection – invasion or colonization of the body by pathogenic microorganisms 3. Disease – when infection results in change in state of health Normal Microbiota – 1. Free of microbes in utero‚ at birth gain lactobacilli in intestine from mothers vaginal canal‚ E. coli taken through food and inhabits intestine
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There are many different types of relationships and interactions between organisms A wide array of interactions among plants‚ animals‚ and microorganisms occurs in nature. Some of these relationships are characterized by a close physical association among species that continues for a large period of the life cycle. In 1879 German botanist Heinrich Anton de Bary coined the term "symbiosis" to describe these relationships‚ meaning the living together of different species of organisms. Many people associate
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Whitney Shepard BIOL9999 1/26/2015 Microbes in the Environment Abstract Microorganisms are plentiful and widespread in the environment. In this lab‚ we undertook to determine the differences in the agars being used and the different colony count observed. After taking four different samples of microbes from the environment and swabbed them in two different plates one with nutrient agar and the other with sabouaud dextrose agar. After the microbes had incubated for 48 hours no results were discovered
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spills asks for effective solutions for the environment. Bioremediation techniques have become a major mechanism for removing oil residues on the affected shorelines. Among the different techniques to enhance natural biodegradation by indigenous microorganisms‚ seeding of new bacteria and fertilizing the indigenous populations have attracted the most interest. The application of nutrients as nitrogen and phosphorus in the form of fertilizers have shown to be most effective in accelerating the biodegradation
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Nutrient Agar which is a growth medium used to culture microorganisms or small plants and Sabourand Dextrose Agar plates used to cultivate moulds and yeasts. The objective of it was to demonstrate that microbes are everywhere. We expected to find a variety of bacteria‚ moulds and yeasts. We were introduced to aseptic techniques as they help ensure that only certain microorganisms are present in the plate. These methods also guarantee that microorganisms do not escape from the specific petri dish‚ contaminating
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ABSTRACT In todays world of ever evolving genetic mutations the incidence of drug resistant forms of microorganisms are on the rise. The importance of identifying these pathogens and their related epidemiology has become increasingly more important. The purpose of this study was to identify an unknown bacterium in a controlled laboratory environment over a 5 week period. Utilizing a variety of differential testing and staining methods learned in the microbiology course‚ students were to determine
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An antibiotic is defined as a substance that is produced by microorganisms that in miniscule amounts inhibits the growth of another microorganism (Tortora 2010). Antibiotics can be found naturally in the environment or they can be manufactured with chemicals. They are specifically designed to hinder the growth and development in other microbes. Yet‚ these antimicrobial drugs should not cause extreme harm to normal microorganisms (Tortora 2010). The vast majority of antibiotics that have been
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