Microbiology - Antimicrobial Chemotherapeutic Agents

Exercise :: Antimicrobial Chemotherapeutic Agents - Section 1

  • Antimicrobial Chemotherapeutic Agents - Section 1
41. 

The antibiotics not having good activity against Enterobacteriaceae is

A. clindamycin
B. cefoxitin
C. trimethoprim-sulphamethoxazole
D. ciprofloxacin

Answer: Option A

Explanation:

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42. 

Quinones and related antibiotics are

A. tetracyclines
B. actinorhodin
C. mitomycin
D. all of these

Answer: Option D

Explanation:

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43. 

Both penicillin and fluoroquinolones

A. bind to and inactivate a bacterial protein
B. inhibit the cross-linking of peptidoglycan
C. are inactivated by β-lactamase
D. must be transported into the cytoplasm in order to act

Answer: Option A

Explanation:

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44. 

A broad-spectrum antibiotic such as chloramphenicol is one that

A. kills both Gram positive and Gram negative bacteria
B. kills all bacteria
C. kills numerous types of microbes
D. kills all microorganisms

Answer: Option C

Explanation:

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45. 

Vancomycin inhibits peptidoglycan synthesis by binding

A. D-alanyl - D-alanine
B. alanine racemase
C. D-alanyl - D-alanine synthetase
D. amidase

Answer: Option A

Explanation:

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