Microbiology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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Aciduric bacteria | bacteria resistent to acid--survive stomachs full acidity--grow when stomach is empty & at higher pH--produce urease--released as a protein in breakdown product
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Antiseptics | milder chemicals--(anti--against--septic--putrifaction or make rotten) used on human flesh
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Aseptic | without contamination
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Autoclave | sterilization using steam--large pressure cooker
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Bactericides | disinfectants that kill bacteria
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Bacteriostatic agents | inhibit growth but do not kill bacteria
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Biocides | nonspecific agent
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Cationic detergents | positive charge--may dissolve microbial membranes--leads to microbial death
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Chemiclaves | use harsh chemicals, such as highly reactive gas ethylene oxide--in a sealed environment, or gamma irradiation
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Disinfection | reduce the viable numbers of living organism--process that decreases numbers of microbes--may not destroy all of them
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Flash pasteurization | 71.5 degrees C for 15 seconds
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Fungicides | disinfectants that kill fungi
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Fungistatic agents | inhibit growth, but do not kill fungi
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Halides | iodine and chlorine--due to chemical similarities--bromine used in hot tubs --evaporates more slowly than chlorine/iodine--kill bacteria--reduce numbers rather than kill all microbes
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Iatrogenic disease | term related to nosocomial disease--physician-induced disease
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Incineration | burning to sterilize material
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Nosocomial diseases | acquired in the hospital setting
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Pasteurization | Louis Pasteur--heats foods such as milk high enough to kill most vegitative cells--30 min. at 63 degrees C
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Phenol | harsh--used to wash handes before surgery--generally replaced with milder derivatives of phenol call phenolics
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Phenol coefficient | effectiveness of new agent divided by effectiveness of phenol--used to compare all disinfectants
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Phenolics | milder derrivitives of phenol
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Resident organisms | organism that is at its normal site of growth
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Sanitize | treated to reduce microbes to a safe level
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Sterilization | kill all life on an object
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Transient organisms | organism that does not attach and servive on a surface
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Ultrafiltration | material suspended in water and sterilized--ultrafilter--has pore sizes less than the smalles bacterium--gases sterilized this way
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Ultrapasteurization | 82 degrees C for 3 seconds
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Virucides | kill viruses
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Created by:
heatherlvn
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