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Microbiology Objective Questions { Antimicrobial and Chemotherapeutic Agents }



1. Which of the following is a drug that interferes with the process of DNA production in the virus that causes genital herpes?
A.Erythromycin
B.Vancomycin
C.Amantadine
D.Acyclovir
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2. Which of the antibiotic is not used as a food preservative ?
A.Pimaricin
B.Nisin
C.Tylosin
D.β-lactam antibiotic
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3. The most selective antibiotics are those that interfere with the synthesis of
A.bacterial DNA
B.bacterial RNA
C.bacterial cell walls
D.bacterial plasma membrane
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4. Cycloserine inhibits
A.alanine racemase
B.D-alanyl - D-alanine synthetase
C.Both (a) and (b)
D.amidase
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5. Which antibiotic has a beta-lactam ring?
A.Cephalosporin
B.Penicillin
C.Tetracycline
D.Streptomycin
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6. Chemotherapeutic agents must
A.prevent/destroy the activity of a parasite
B.leave unaltered the host's natural defense mechanisms
C.be able to come in contact with the parasite by penetrating the cells
D.all of the above
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7. Novobiocin can be used against
A.gram +ve Staphylococci
B.gram -ve Meningococci & Gonococci
C.Haemophilus
D.all of these
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