Discussion
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- Question
Cycloserine inhibits
Options- A. alanine racemase
- B. D-alanyl - D-alanine synthetase
- C. Both (a) and (b)
- D. amidase
- Correct Answer
- Both (a) and (b)
- 1. Which of the following is not a semi synthetic chemotherapeutic agent?
Options- A. Ampicillin
- B. Carbenicillin
- C. Penicillin
- D. Sulfonamide Discuss
- 2. Which of the following is not an aminoglycoside antibiotic?
Options- A. Streptomycin
- B. Neomycin
- C. Kanamycin
- D. Cephalosporin Discuss
- 3. Which antibiotic has a beta-lactam ring?
Options- A. Cephalosporin
- B. Penicillin
- C. Tetracycline
- D. Streptomycin Discuss
- 4. Quinones and related antibiotics are
Options- A. tetracyclines
- B. actinorhodin
- C. mitomycin
- D. all of these Discuss
- 5. Polyene antibiotics are
Options- A. large ring structures
- B. ?-lactam - thiazolidine ring
- C. small ring structures
- D. any of these Discuss
- 6. The larger the __________ , the better the chemotherapeutic agent.
Options- A. therapeutic index
- B. therapeutic dose
- C. selective toxicity
- D. spectrum Discuss
- 7. By which of the following means antifungal chemotherapeutic agents may affect fungi?
Options- A. Interfere with nuclear division by preventing the aggregation of microtubules needed for mitosis
- B. Interfere with normal nucleic acid synthesis
- C. Interfere with ergosterol biosynthesis and thus alter the structure of the cytoplasmic membrane as well as the function of several membrane-bound enzymes like those involved in nutrient transport and chitin synthesis
- D. all of these Discuss
- 8. The mode of action of polymyxin is to
Options- A. inhibit protein synthesis
- B. inhibit DNA synthesis
- C. injury to the plasma membrane
- D. inhibit folic acid synthesis Discuss
- 9. Which of the following is not an example of potent antitumer agents?
Options- A. Anthramycin
- B. Sibromycin
- C. Neothramycin
- D. Erythromycin Discuss
- 10. The most selective antibiotics are those that interfere with the synthesis of
Options- A. bacterial DNA
- B. bacterial RNA
- C. bacterial cell walls
- D. bacterial plasma membrane Discuss
Antimicrobial Chemotherapeutic Agents problems
Search Results
Correct Answer: Penicillin
Correct Answer: Cephalosporin
Correct Answer: Penicillin
Correct Answer: all of these
Correct Answer: large ring structures
Correct Answer: therapeutic index
Correct Answer: all of these
Correct Answer: injury to the plasma membrane
Correct Answer: Erythromycin
Correct Answer: bacterial cell walls
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