Quiz 2 Embalming microbiology
under what conditions must an autoclave work to sterilize?
15 psi at 121*C for 10 minutes
what kind of controls microbial growth?
UV
a retort is...?
a combustion chamber.
when one bacterium inhibits the growth of another, that is known as______________.
antagonism
an agent that kills mold would be...?
fungicide
a bacterium in a __________ would shrivel.
hypertonic
a bacterium in a _____________ solution would swell and might burst.
hypotonic
the best method to treat hazardous waste is...?
incineration
a disinfectant that is a tincture is
iodine
how does higher temperature affect the effectiveness of chemical agents?
it usually increases effectiveness.
an agent that kills mosquito larvae is
larvicide
An agent that kills endospores is...?
sporicide
Completely removing or destroying all life-form, endospores, or their products is...?
sterilization
An acid would be numbers ____ to ____ on the pH scale.
0:6
how much of the earth's oxygen do autotrophic bacteria produce...?
20%
organisms that make their own food through photosynthesis are
autotrophs
what chemical is used to produce Lysol?
cresols
a disinfectant that oxidizes certain molecules within the microbial cell is...?
halogen
when both species of bacteria benefit in an association, that is known as _______________.
mutualism
an agent that kills viruses is
viricide
a base would be number ____ to ____ on the pH scale.
8:14
what alters the surface tension of the cell membrane, causing the cell contents to leak out and kill the cell?
surfactants
the lowest temperature at which all microbes are killed in 10 minutes is...?
thermal death point
the physical method of controlling microbes that damages the cell's DNA is...?
UV light
a chemical method of controlling microbes that denatures protein and dissolves lipids in the cell membrane is...?
alcohol
in a microbial association, when one bacterium benefits and the other is unaffected, that is known as_________.
antagonism
inhibiting microbial growth on living tissue is
antisepsi
What is used to treat municipal drinking water and swimming pools?
chlorine
destroying pathogenic agents by disinfecting inanimate object is
disinfection
the physical method of controlling microbes that denature proteins is...?
dry heat
bacteria that can adapt to different sources of nutrition are _____________ bacteria.
facultative
Organisms that cannot make their own food and require food from a carbon source are...?
heterotrophs
a compound of iodine and surfactant is
iodophore
Bacteria that prefer human body temperature are...?
mesophiles
bacteria that MUST have oxygen are
obligate aerobes
bacteria that must NOT be in the presence of oxygen are...?
obligate anaerobes
bacteria that would be utilizing tissue of human remains as nutrition source would be _______________ bacteria.
obligate saprophyte
A chemical method of controlling microbes that has a sickeningly sweet and tarry odor is...?
phenol
what genus of bacteria is commonly associates with secondary infections in burn patients?
pseudomonas
bacteria that might prefer the temperature of remains in a refrigeration unit are...?
psychrophiles
