14. Which β-lactam antibiotic does not contain a fused ring system
10. Clavulanic acid acts as a:
4. Which of the following antibiotics is derived from actinomycetes?
24. The antibacterial activity of tetracyclines is primarily due to:
2. Which of the following terms describes antibiotics produced by microorganisms to inhibit other microorganisms?
27. Which of the following tetracyclines is semisynthetic and has enhanced lipophilicity?
25. Which tetracycline is most stable in acidic pH
7. Which of the following is a monobactam?
9. The 4-membered β-lactam ring is highly reactive due to:
26.Tetracyclines should not be given with milk because of
18. Which of these aminoglycosides is used orally for bowel sterilization?
28.Tetracyclines degrade in solution by
16. Aminoglycosides exert their antibacterial action by:
23. The basic nucleus of tetracyclines consists of
19. Ototoxicity is a major side effect of which class of antibiotics
30.Which of the following tetracyclines has the longest half-life and best oral absorption
20. Which of the following is true about the structure of aminoglycosides
29.Phototoxicity is a known adverse effect of
6. The core nucleus of Penicillin is:
12. Which of the following antibiotics is most susceptible to acid hydrolysis?
1. Who discovered Penicillin in 1928?
22. Kanamycin is obtained from:
3. Selman Waksman is credited with the discovery of:
8. Cephalosporins are derived from:
13. What is the main difference between penicillins and cephalosporins structurally?
17. Which of the following is not an aminoglycoside?
21. Streptomycin is ineffective in the treatment of infections caused by:
15. Which of the following penicillins is resistant to penicillinase
11. The second-generation cephalosporins are more active against:
5. The term "antibiotic" was first coined by
