Antimicrobial Chemotherapeutic Agents Which of the following may cause resistance to penicillin? All of these Alteration or lack of penicillin-binding proteins Production of β-lactamases by bacteria Impermeability of cell envelope All of these Alteration or lack of penicillin-binding proteins Production of β-lactamases by bacteria Impermeability of cell envelope ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents The nitrofurans differ from the antibiotics in that they occur naturally are antimicrobial drugs all of these do not occur naturally occur naturally are antimicrobial drugs all of these do not occur naturally ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents Nystatin is a drug used for treatment of diseases caused by gram negative bacterium gram positive bacterium yeast protozoan gram negative bacterium gram positive bacterium yeast protozoan ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents Which of the antibiotic is not used as a food preservative ? Pimaricin Tylosin Nisin β-lactam antibiotic Pimaricin Tylosin Nisin β-lactam antibiotic ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents Which of the following tests is used to determine the minimal lethal concentration? Broth dilution test Agar dilution test All of these Dilution susceptibility tests Broth dilution test Agar dilution test All of these Dilution susceptibility tests ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents The antibiotics which affords a broad spectrum of antimicrobial coverage against aerobic and anaerobic bacteria, rickettsiae, chlamydiae, and mycoplasmas is metronidazole vancomycin tetracycline gentamicin metronidazole vancomycin tetracycline gentamicin ANSWER DOWNLOAD EXAMIANS APP
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