The nitrofurans differ from the antibiotics in that they do not occur naturally are antimicrobial drugs all of these occur naturally TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not an aminoglycoside antibiotic? Neomycin Kanamycin Cephalosporin Streptomycin TRUE ANSWER : ? YOUR ANSWER : ?
Who developed the concept of specific toxicity? Ehrlich Watson Pasteur Fleming TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is used only in life-threatening situations when no other drug is adequate? Chloramphenicol Tetracycline Streptomycin Penicillin TRUE ANSWER : ? YOUR ANSWER : ?
Interference mechanism of ciprofloxacin and norfloxacin is due to their action on cell wall synthesis DNA function protein synthesis cell membrane function TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not an example of potent antitumer agents? Neothramycin Anthramycin Erythromycin Sibromycin TRUE ANSWER : ? YOUR ANSWER : ?
When using alcohol as an antiseptic, which concentration is considered most effective? 50% 70% 95% 25% TRUE ANSWER : ? YOUR ANSWER : ?
Both penicillin and fluoroquinolones are inactivated by β-lactamase inhibit the cross-linking of peptidoglycan must be transported into the cytoplasm in order to act bind to and inactivate a bacterial protein TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following tests is used to determine the minimal lethal concentration? All of these Broth dilution test Agar dilution test Dilution susceptibility tests TRUE ANSWER : ? YOUR ANSWER : ?
A broad-spectrum antibiotic such as chloramphenicol is one that kills all microorganisms kills both Gram positive and Gram negative bacteria kills numerous types of microbes kills all bacteria TRUE ANSWER : ? YOUR ANSWER : ?