question
2 types of ways to control microbial
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Heat and irradidtion by UV light
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Most common way to kill bacteria
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moist heat
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How does moist heat kill
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Penetrates the microbe and denatures the protien,
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What is thermal death time
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Minimal time required to kill all microorganisms in liquid suspension at a given temperature
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Tryptic Soy Agar
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Used to cultivate bacteria. Incubattion temerature, following inoculation.
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Psychrotropic
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Mesophilic organisms that normally grow at 20-40 C but can still grow at 5.
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Short wavelength light
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nonionizing radiation. UV light damages the chromosal dna.
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Antiseptic
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used on living tissue
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disinfectant
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used on inanimate objects
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Antimicrobial
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Specific chemotherapeutic agents used to treat infections.
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antibiotic
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Metabolic products of one organism that kill or inhibit growth of another
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Kirby-Bauer Test
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Atests antibiotic susceptibility using filter paper disks impregnated with kknown quantities of antimicrobial agent.
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What is used for the kirby-bauer tests
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Mueller Hinton agar
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Bacteria produced in Vinegar
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Acetobacteria
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Antibiotic Sensitivety testing
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Uses Zone of inhibitation. Kirby-Bauer method, Muellar-hinton Agar
question
What Agar is used for testing acid in mouth?
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Snyder Test Agar
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What is the key microbe in Snyder test Agar?
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Streptococcus mutans
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What microbe is found in Tomato Juice Agar
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Lactobacillus
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What microbe is present in Mitis-Salivarius Agar?
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Streptococcus
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What is a common method of measuring living cell numbers?
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Standard Plate Count
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What is used to test water
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Indicator organisms
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What is Escherichia coli
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Gram negative, anaerobicc, non spore forming, rod shaped, fermet acid.
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What test is used for coliform bacteria
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Most Probable number
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Neissberia
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s diplococcus gonorrhoeae
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