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