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