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Home Microbiology Antimicrobial Chemotherapeutic Agents Comments

  • Question
  • The penicillin resistant to ?-lactamases is


  • Options
  • A. carbenicillin
  • B. closacillin
  • C. penicillin-G
  • D. ampicillin

  • Correct Answer
  • closacillin 


  • Antimicrobial Chemotherapeutic Agents problems


    Search Results


    • 1. Vancomycin inhibits peptidoglycan synthesis by binding

    • Options
    • A. D-alanyl - D-alanine
    • B. alanine racemase
    • C. D-alanyl - D-alanine synthetase
    • D. amidase
    • Discuss
    • 2. Which of the following drugs may show plasmid-mediated resistance?

    • Options
    • A. Nalidixic acid
    • B. Ampicillin
    • C. Rifampicin
    • D. Methicillin
    • Discuss
    • 3. Which of the following drugs involves modification of the drug by enzymatic modification or degradation of its active element to alter its/their resistance?

    • Options
    • A. Pencillins
    • B. Choloramphenicol
    • C. Aminoglyosides
    • D. All of these
    • Discuss
    • 4. Which of the following is used only in life-threatening situations when no other drug is adequate?

    • Options
    • A. Penicillin
    • B. Tetracycline
    • C. Chloramphenicol
    • D. Streptomycin
    • Discuss
    • 5. Chemotherapeutic agents must

    • Options
    • A. prevent/destroy the activity of a parasite
    • B. leave unaltered the host's natural defense mechanisms
    • C. be able to come in contact with the parasite by penetrating the cells
    • D. all of the above
    • Discuss
    • 6. Which of the following methods would be most appropriate for sterilizing an antibiotic solution?

    • Options
    • A. Dry heat sterilization
    • B. Microfiltration
    • C. Autoclaving
    • D. Desiccation
    • Discuss
    • 7. Who developed the concept of specific toxicity?

    • Options
    • A. Pasteur
    • B. Fleming
    • C. Watson
    • D. Ehrlich
    • Discuss
    • 8. Bacterial cells susceptible to penicillium can be protected from destruction if the medium in which they are exposed is of

    • Options
    • A. high osmotic pressure
    • B. low osmotic pressure
    • C. moderate osmotic pressure
    • D. high surface tension
    • Discuss
    • 9. The third generation cephalosporin agents is

    • Options
    • A. cefotaxime
    • B. cefoxitin
    • C. cephalothin
    • D. cephalexin
    • Discuss
    • 10. Cephalosporins and Penicillins interfere with which of the following?

    • Options
    • A. Protein synthesis
    • B. DNA function
    • C. Cell membrane function
    • D. Cell wall synthesis
    • Discuss


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