Microbiology 020 - General Microbiology » Winter 2022 » Lab Quiz 6- Bacteriostatic Cmpds & Antibiotic Resistance Tests

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Question #1
Resistant protist spores may be inactivated by ______.
A.   Chlorine
B.   Iodine
C.   Bromine
D.   UV
E.   Benzalkonium chloride
Question #2
Alcohol is used to kill bacterial endospores.
A.   True
B.   False
Question #3
Which of the following may be used to disinfect water?
A.   Boiling
B.   Chlorine
C.   Iodine
D.   All the choices listed here are correct.
Question #4
What type of compound is the popular household cleaner Lysol?
A.   Sterilant
B.   Disinfectant
Question #5
Which of the following may be used to sterilize glassware?
A.   Oven
B.   Bleach
C.   Autoclave or an oven set to the correct temperature and time
D.   Autoclave
Question #6
Penecillin is extracted from ______.
A.   a special plant.
B.   bacteria.
C.   a fungus.
D.   soil microbes.
Question #7
What is the standard medium used for the Kirby-Bauer Disk Diffusion test?
A.   Mueller-Hinton agar
B.   EMB
C.   MacConkey agar
D.   MSA
Question #8
What is the proper order of the following when preparing a Kirby-Bauer disk diffusion test? I. Apply the antibiotic disks. II. Inoculate the medium with the bacteria being tested. III. Measure zones of inhibition. IV. Incubate
A.   III, II, I, IV
B.   II, I, IV, III
C.   The correct answer is not listed here.
D.   I, II, IV, III
Question #9
The mode of action of penicillin is ______.
A.   it binds to the small subunit of the bacterial ribosome, thus inhibiting it.
B.   it binds to the large subunit of the bacterial ribosome, thus inhibiting it.
C.   it prevents proper cell wall formation.
D.   it blocks DNA replication in bacteria.
Question #10
Compare the zones of inhibition for the following bacteria. Which is most resistant? Bacterium A- 5 mm Bacterium B- 15 mm Bacterium C- 10 mm
A.   Bacterium C
B.   Bacterium B
C.   Bacterium A

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