Antimicrobial Chemotherapeutic Agents Which of the following may cause resistance to penicillin? 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 Production of β-lactamases by bacteria Impermeability of cell envelope ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents The scientist who first discovered the substance penicillin was Paul Ehrlich Joseph Lister none of these Alexander Fleming Paul Ehrlich Joseph Lister none of these Alexander Fleming ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents Which antibiotic has a beta-lactam ring? Tetracycline Penicillin Cephalosporin Streptomycin Tetracycline Penicillin Cephalosporin Streptomycin ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents Which of the antibiotic is not used as a food preservative ? Tylosin β-lactam antibiotic Pimaricin Nisin Tylosin β-lactam antibiotic Pimaricin Nisin ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents Which of the following tests is used to determine the minimal lethal concentration? All of these Broth dilution test Dilution susceptibility tests Agar dilution test All of these Broth dilution test Dilution susceptibility tests Agar dilution test ANSWER DOWNLOAD EXAMIANS APP
Antimicrobial Chemotherapeutic Agents Which is not an amino acid and peptide antibiotic? Bacitracin Penicillin Tetranactin Actinomycin Bacitracin Penicillin Tetranactin Actinomycin ANSWER DOWNLOAD EXAMIANS APP
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