Microbiology 020 - General Microbiology » Spring 2022 » Review Quiz 5

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Question #1
Pasteurization uses ___________ to increase the shelf life of some food/drink.
A.   filters
B.   mild heat
C.   disinfectants
D.   short-wave radiation
Question #2
Which one does not have bacteriostatic effect on microbes?
A.   dehydration
B.   refrigeration
C.   applying high concentration of salt
D.   microbicide use
Question #3
________ destroys microbial pathogens by denaturing proteins.
A.   Formaldehyde
B.   Microwave
C.   UV light
D.   Heat
Question #4
A/n ______________ is an antibacterial chemical naturally produced by microbes like fungi and bacteria.
A.   antiseptic
B.   antibiotic
C.   disinfectant
D.   surfactant
Question #5
Which control method is used when you use wet wipes to clean the doorknob?
A.   sterilization
B.   disinfection
C.   degerming
D.   chemotherapy
Question #6
______________act by disrupting cell membranes & mechanically removing microbes.
A.   Organic acids
B.   Halogens
C.   Alcohols
D.   Surfactants & detergents
Question #7
All of these chemicals control microbial growth by being strong oxidizing agents except ___________________.
A.   hydrogen peroxide
B.   formaldehyde
C.   chlorine
D.   iodine
Question #8
An antiseptic can kill the spores of spore-forming bacteria.
A.   True
B.   False
Question #9
Which antibiotic/s block/s bacterial cell wall synthesis?
A.   penicillin & vancomycin
B.   polymyxin B
C.   sulfa drugs
D.   streptomycin & tetracyclin
Question #10
Which is not a strategy to slow down evolution of antibiotic resistance?
A.   use the same antibiotic every time you get ill
B.   complete (finish) the dosage
C.   use vaccines
D.   only use against bacterial pathogens

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