Week 4 Control of Microorganisms Flashcards
process to promote and establish conditions which minimize or eliminate biohazards
Reduction of a microbial population to a safe level by public health standards
sanitation
a process of completely removing or destroying all life forms and their products including endospores
sterilization
the destruction or inhibition of disease-causing microorganisms by chemical or physical means (applies only to inanimate objects and surfaces)
disinfection
the prevention or inhibiting of the growth of causative microorganisms (applies to living tissue)
antisepsis
manual process by which microorganisms are removed from a surface
scrubbing
a form of sterilization that reduces waste to a more manageable amount and form – ashes
incineration
a form of incineration for human remains
cremation
Temperature of approximately ____ must be maintained until remains have undergone complete combustion for cremation
1600°F
will sterilize water that does not contain endospores and kill vegetative bacteria, most viruses, and fungi
boiling
materials are incubated overnight to allow endospores to germinate then the objects are introduced to _____ the next day and this process is repeated
free-flowing steam
an autoclave machine is used to control microbial growth using ______
steam under pressure
____ temperatures do not always destroy vegetative microbes or endospores
____ temperatures do generally inhibit the growth of microbes but once temperature returns to ambient, the microbes will continue to function normally
cold
A form of nonionizing radiation that can control microorganism growth
-Organism must be exposed directly for it to be effective
-Some organisms are resistant to this method of control
ultraviolet light
a chemical or physical agent that destroys or inhibits disease-causing microorganisms
disinfectant
a substance that destroys microorganisms
germicide
