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Microbiology
Microbiology Multiple Choice
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Q.1
Which of the following is the most accurate method for microbial assay of antibiotics?
a) Physical assay
b) Chemical assay
c) Biological assay
d) Chemical and biological assay
Q.2
The international unit of penicillin is defined by how much amount of International Standard?
a) 1 mg
b) 0.262 µg
c) 0.5988 µg
d) 0.5 mg
Q.3
Zone of inhibition is observed in tube-dilution method.
a) True
b) False
Q.4
Pigs respond dramatically to the addition of which of the following antibiotics to their diet?
a) aureomycin
b) terramycin
c) penicillin
d) oxytetracycline
Q.5
Which of the following antibiotic have a sparing effect on the Bin the diet?
a) Streptomycin
b) Tetracycline
c) Anthramycin
d) Chloramphenicol
Q.6
Antibiotics are not effective against plant pathogens.
a) True
b) False
Q.7
Nystatin is produced from the strain _____________________
a) Streptomyces noursei
b) Streptomyces aureofaciens
c) Streptomyces kanamyceticus
d) Streptomyces fradiae
Q.8
Griseofulvin is useful in the therapy of nonsystemic fungal infections.
a) True
b) False
Q.9
Acycloguanosine is a nucleoside analog which is active against ___________________
a) Influenza A virus
b) HIV virus
c) Herpes virus
d) Influenza B virus
Q.10
Which of the following has its antiviral action attributed to the interference of protein synthesis?
a) Amantadine
b) Interferons
c) Acycloguanosine
d) 5’-iododeoxyuridine
Q.11
Amantadine is very effective against influenza A virus.
a) True
b) False
Q.12
Which of the following is effective in the control of tuberculosis in humans?
a) Nitrofurans
b) Nalidixic Acid
c) Sibromycin
d) Isoniazid
Q.13
Anthramycin is which of the following type of antibiotic?
a) Antiviral
b) Antitumor
c) Antifungal
d) Antibacterial
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