Antimicrobial Chemotherapeutic Agents Which of the following may cause resistance to penicillin? Production of β-lactamases by bacteria Impermeability of cell envelope Alteration or lack of penicillin-binding proteins All of these Production of β-lactamases by bacteria Impermeability of cell envelope Alteration or lack of penicillin-binding proteins All of these ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents When using alcohol as an antiseptic, which concentration is considered most effective? 70% 95% 25% 50% 70% 95% 25% 50% ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents Which of the following drugs may show plasmid-mediated resistance? Nalidixic acid Methicillin Ampicillin Rifampicin Nalidixic acid Methicillin Ampicillin Rifampicin ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents The third generation cephalosporin agents is cephalexin cefotaxime cefoxitin cephalothin cephalexin cefotaxime cefoxitin cephalothin ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents Quinones and related antibiotics are mitomycin all of these tetracyclines actinorhodin mitomycin all of these tetracyclines actinorhodin ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents A broad-spectrum antibiotic such as chloramphenicol is one that kills numerous types of microbes kills all microorganisms kills all bacteria kills both Gram positive and Gram negative bacteria kills numerous types of microbes kills all microorganisms kills all bacteria kills both Gram positive and Gram negative bacteria ANSWER DOWNLOAD EXAMIANS APP
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