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