OSU Microbiology 4000.01 Chapter 7
("microbio: an intro" 13th edition)
Physical or chemical removal of ALL living microorganisms, including the most resistant forms
(e.g endospores) - Answer sterilization
T/F: sterilization eliminates endospores - Answer true
sterilizing agents such as glutaraldehyde and ethylene oxide - Answer sterilants
Reduction or elimination of MOST pathogens. Some viable microbes may remain (can be
physical or chemical) - Answer disinfection
T/F following disinfection, no microbes remain - Answer false
(sometimes toxic) chemicals used on inanimate objects- reduce or eliminate MOST pathogens
(ex: bleach, formaldehyde, phenols) - Answer disinfectants
bleach, formaldehyde, and phenols are examples of... - Answer disinfectants
non-toxic chemicals used on living tissues (ex- chlorhexidine, iodophors, alcohols) - Answer
antiseptics
chlorhexadine, iodophors, and alcohols are examples of... - Answer antiseptics
reducing pathogens to levels considered safe to handle (through sterilization, antisepsis, or
disinfectants) - Answer decontamination
reducing microbes to "accepted health standards" (ex: high temp wash, dip into disinfectant)-
minimal chance of disease transmission - Answer sanitization
an object that is considered clean but at no specific level of microbial control - Answer
sanitized object
delaying spoilage of foods and perishable products - Answer preservation
, adjusting storage conditions or add bacteriostatic preservatives to slow or prevent microbial
growth - Answer preservation
brief heating of food items to reduce the number of spoilage organisms/destroy pathogens -
Answer pasteurization
the process of heating milk at 72 degrees C for 15 seconds - Answer pasteurization
which approach to growth control is most appropriate for daily life - Answer
disinfection/sanitization
which approach to growth control is most appropriate for healthcare - Answer
sterilization/disinfection
purpose of growth control in the laboratory - Answer prevent contamination of the
experiment, researcher, and environment
high risk microbes - Answer BSL-4
low risk microbes - Answer BSL-1
prions, endospores, protozoan oocysts, and mycobacterium are considered ______________
and require more rigorous treatment - Answer highly resistant microbes
when there a larger number of microbes, ______________ first can minimize time necessary to
sterilize or disinfect - Answer washing/scrubbing
medical equipment that can penetrate body tissues; HIGH RISK - Answer critical equipment
(spauldings rules)
what classification of medical equipment includes needles and scalpels - Answer critical
equipment
critical equipment requires which approach to growth control - Answer sterilization
medical equipment that comes in contact with mucous membranes that does not penetrate
body tissues; MEDIUM RISK - Answer semicritical equipment
("microbio: an intro" 13th edition)
Physical or chemical removal of ALL living microorganisms, including the most resistant forms
(e.g endospores) - Answer sterilization
T/F: sterilization eliminates endospores - Answer true
sterilizing agents such as glutaraldehyde and ethylene oxide - Answer sterilants
Reduction or elimination of MOST pathogens. Some viable microbes may remain (can be
physical or chemical) - Answer disinfection
T/F following disinfection, no microbes remain - Answer false
(sometimes toxic) chemicals used on inanimate objects- reduce or eliminate MOST pathogens
(ex: bleach, formaldehyde, phenols) - Answer disinfectants
bleach, formaldehyde, and phenols are examples of... - Answer disinfectants
non-toxic chemicals used on living tissues (ex- chlorhexidine, iodophors, alcohols) - Answer
antiseptics
chlorhexadine, iodophors, and alcohols are examples of... - Answer antiseptics
reducing pathogens to levels considered safe to handle (through sterilization, antisepsis, or
disinfectants) - Answer decontamination
reducing microbes to "accepted health standards" (ex: high temp wash, dip into disinfectant)-
minimal chance of disease transmission - Answer sanitization
an object that is considered clean but at no specific level of microbial control - Answer
sanitized object
delaying spoilage of foods and perishable products - Answer preservation
, adjusting storage conditions or add bacteriostatic preservatives to slow or prevent microbial
growth - Answer preservation
brief heating of food items to reduce the number of spoilage organisms/destroy pathogens -
Answer pasteurization
the process of heating milk at 72 degrees C for 15 seconds - Answer pasteurization
which approach to growth control is most appropriate for daily life - Answer
disinfection/sanitization
which approach to growth control is most appropriate for healthcare - Answer
sterilization/disinfection
purpose of growth control in the laboratory - Answer prevent contamination of the
experiment, researcher, and environment
high risk microbes - Answer BSL-4
low risk microbes - Answer BSL-1
prions, endospores, protozoan oocysts, and mycobacterium are considered ______________
and require more rigorous treatment - Answer highly resistant microbes
when there a larger number of microbes, ______________ first can minimize time necessary to
sterilize or disinfect - Answer washing/scrubbing
medical equipment that can penetrate body tissues; HIGH RISK - Answer critical equipment
(spauldings rules)
what classification of medical equipment includes needles and scalpels - Answer critical
equipment
critical equipment requires which approach to growth control - Answer sterilization
medical equipment that comes in contact with mucous membranes that does not penetrate
body tissues; MEDIUM RISK - Answer semicritical equipment
