question
-cidal
answer
killing
question
static
answer
inhibits growth
question
antimicrobials
answer
substances that kill or inhibit growth of microbial cells
question
penicillin is an example of ?
answer
antimicrobial
question
How do antimicrobials work?
answer
inhibition of cell synthesis, inhibition of protein synthesis, interference of nucleic acid synthesis, & interference with membrane function
question
antiseptics
answer
chemicals that kill or inhibit microorganisms on living tissue
question
Antiseptics deal with ?
answer
bacteria
question
Disinfectants
answer
germicidal or germistatic chemicals that are not generally not safe to use on animal tissue
question
antibiotics
answer
chemicals produce by one microbe that kill or inhibit the growth of another microbe
question
Kirby-Bauer Test
answer
The test to determine the efficacy of antibiotics or the antibiotic resistance of bacteria.
question
zone of inhibition
answer
The zone where bacteria can't grow around a given antibiotic.
question
Larger zone of inhibition means
answer
more effective antibiotic
question
Germicidal activity of UV light depends on ?
answer
length of exposure
question
UV light is absorbed by?
answer
microbial DNA
question
UV light is considered ?
answer
germicidal
question
UV light has the potential for killing only?
answer
dividing cells
question
Can UV light achieve sterility?
answer
no
question
thymine dimers
answer
covalent link of adjacent thymine bases in DNA
question
SOS repair
answer
involves new DNA synthesis, is a last-ditch effort to save the cell , result in mutations
question
Mutagens
answer
A chemical or physical agent that interacts with DNA and causes a mutation.
question
Which bacteria have efficient repair mechanisms against UV light?
answer
bacillus and cholestridum
question
nosocomial infection
answer
hospital acquired infection
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