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10 terms

Chpter 7

Mrs. Vernon SCC Mulipte choice questions Pg 208
STUDY
PLAY
Which of the following does NOT kill endospores?
autoclave
INCINERATION
hot air sterilization
pasteurization
Which of the following is most effective for sterilizing mattresses and platic Petri dishes
chlorine
ETHYLENE OXIDE
glutaraldehyde
autoclave
nonionizing radiation
Which of these disinfecants does NOT act by disrupting the plasma membrane>?
phenolics
PHENOL
quaternary ammonium compounds
halogens
biguanides
Which of the following CANNOTbe used to sterilize a heat labile solution stored in a plastic container?
gamma radiation
ETHYLENE OXIDE
nonionizing radiation
short-wave radiation
Which of the following is NOT a characteristic of quaternary ammonium compounds?
bacterialcidal against gram-positive bacteria
sprocidal
AMOEBICIDAL
fungicidal
kills enveloped viruses
A classmate is trying to determine how a disinfectant might kill cells. You observed that when he spilled the disinfectant in your reduced litmus milk, that litmus turned blue again. you suggest to your classmate that
.
the disinfectant might inhibit cell wall synthesis
the disinfectant might oxidize molecules
the disinfectant might inhibit protein synthesis
THE DISINFECTANT MIGHT DENATURE PROTEINS
he take his work away from yours
Which of the following os most likely to be bactericidal?
membrane filtration
ionizing radiation
LYPOHILIZATION (FREEZE -DRYING)
deep-freezing
all the above
Which of the following is used to control microbial growth in foods?
organic acids
ALCOHOLS
aldehydes
heavy metals
all of the above
Which disinfectant is the most effective (visual chart)
E. none of the above
Which disinfectant (s) is/ are bactericidal?
a) answer: is A, B,C and D