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