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MCQs

Total Questions : 204 | Page 15 of 21 pages
Question 141. The international unit of penicillin is defined by how much amount of International Standard?
  1.    1 mg
  2.    0.262 µg
  3.    0.5988 µg
  4.    0.5 mg
 Discuss Question
Answer: Option C. -> 0.5988 µg
Answer: (c).0.5988 µg
Question 142. Antibiotics are not effective against plant pathogens.
  1.    True
  2.    False
  3.    May be
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 143. Which of the following antibiotic have a sparing effect on the B12 in the diet?
  1.    Streptomycin
  2.    Tetracycline
  3.    Anthramycin
  4.    Chloramphenicol
 Discuss Question
Answer: Option A. -> Streptomycin
Answer: (a).Streptomycin
Question 144. Pigs respond dramatically to the addition of which of the following antibiotics to their diet?
  1.    aureomycin
  2.    terramycin
  3.    penicillin
  4.    oxytetracycline
 Discuss Question
Answer: Option D. -> oxytetracycline
Answer: (d).oxytetracycline
Question 145. Nystatin is produced from the strain _____________________
  1.    Streptomyces noursei
  2.    Streptomyces aureofaciens
  3.    Streptomyces kanamyceticus
  4.    Streptomyces fradiae
 Discuss Question
Answer: Option A. -> Streptomyces noursei
Answer: (a).Streptomyces noursei
Question 146. Griseofulvin is useful in the therapy of nonsystemic fungal infections.
  1.    True
  2.    False
  3.    May be
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 147. Chemotherapeutic agents must
  1.    prevent/destroy the activity of a parasite
  2.    leave unaltered the host's natural defense mechanisms
  3.    be able to come in contact with the parasite by penetrating the cells
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Answer: (d).all of the above
Question 148. Novobiocin can be used against
  1.    gram +ve Staphylococci
  2.    gram -ve Meningococci & Gonococci
  3.    Haemophilus
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 149. Interference mechanism of ciprofloxacin and norfloxacin is due to their action on
  1.    cell wall synthesis
  2.    cell membrane function
  3.    DNA function
  4.    protein synthesis
 Discuss Question
Answer: Option C. -> DNA function
Answer: (c).DNA function
Question 150. Which of the following methods would be most appropriate for sterilizing an antibiotic solution?
  1.    Dry heat sterilization
  2.    Microfiltration
  3.    Autoclaving
  4.    Desiccation
 Discuss Question
Answer: Option B. -> Microfiltration
Answer: (b).Microfiltration

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