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MCQs

Total Questions : 55 | Page 4 of 6 pages
Question 31. . Polyene antibiotics are
  1.    large ring structures
  2.    β-lactam - thiazolidine ring
  3.    small ring structures
  4.    any of these
 Discuss Question
Answer: Option A. -> large ring structures
Question 32. . The third generation cephalosporin agents is
  1.    cefotaxime
  2.    cefoxitin
  3.    cephalothin
  4.    cephalexin
 Discuss Question
Answer: Option A. -> cefotaxime
Question 33. . The penicillin resistant to β-lactamases is
  1.    carbenicillin
  2.    closacillin
  3.    penicillin-G
  4.    ampicillin
 Discuss Question
Answer: Option B. -> closacillin
Question 34. . Which of the following drugs may show plasmid-mediated resistance?
  1.    Nalidixic acid
  2.    Ampicillin
  3.    Rifampicin
  4.    Methicillin
 Discuss Question
Answer: Option B. -> Ampicillin
Question 35. . The antibiotics not clinically useful for Pseudomonas aeruginosa infection is
  1.    aminoglycosides
  2.    ceftazidime
  3.    piperacillin
  4.    trimethoprim-sulphamethoxazole
 Discuss Question
Answer: Option D. -> trimethoprim-sulphamethoxazole
Question 36. . The scientist who first discovered the substance penicillin was
  1.    Joseph Lister
  2.    Alexander Fleming
  3.    Paul Ehrlich
  4.    none of these
 Discuss Question
Answer: Option B. -> Alexander Fleming
Question 37. . The larger the __________ , the better the chemotherapeutic agent.
  1.    therapeutic index
  2.    therapeutic dose
  3.    selective toxicity
  4.    spectrum
 Discuss Question
Answer: Option A. -> therapeutic index
Question 38. . With which of the following aminoglycosides interfere?
  1.    Protein synthesis
  2.    DNA function
  3.    Cell wall synthesis
  4.    Cell membrane function
 Discuss Question
Answer: Option A. -> Protein synthesis
Question 39. .  Chelate forming peptide antibiotic are/is
  1.    bleomycins
  2.    sideromycins
  3.    both (a) and (b)
  4.    vancomycin
 Discuss Question
Answer: Option C. -> both (a) and (b)
Question 40. . Which of the following protein synthesis mechanisms may be affected by particular drugs?
  1.    Peptide bond formation
  2.    mRNA translocation
  3.    Aminoacyl-tRNA binding
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these

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