Midterm – Microbiology Answers – Flashcards

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Antibiotic
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Type of antimicrobial that is made by microorganisms
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Zone of Inhibition
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Clear circular area appears around the antimicrobial
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Mueller-Hinton Agar
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Commonly used for antibiotic susceptibility testing. (It is also used to isolate and maintain Neisseria and Moraxella species.)
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Electrophoresis
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Separation of DNA fragments.
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Horizontal gene transfer
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Transfer of genes between organisms in a manner other than traditional reproduction.
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Transformation
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Bacterial cells take up DNA from one bacterium to another.
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Competence
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Ability of a cell to take up DNA from it's environment.
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Ampicillin
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It is a beta-lactam antibiotic useful for the treatment of a number of bacterial infections.
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Plasmids
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Small, circular, self-replicating DNA molecules.
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Hospital-acquired infections
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Called Nosocomial and causes approx 100,000 deaths a year.
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Autotroph
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An organism that utilizes inorganic carbon (CO2) as there source of carbon
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Heterotrophic
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Organisms that cannot synthesize organic molecules from CO2.
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Fastidious
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"picky", requires a variety of growth factors and nutrients from the environment and will not grow well if these factors are not present.
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