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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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