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