MICROBIOLOGY CHAPTER 10 EXAM | QUESTIONS & 100% VERIFIED ANSWERS | LATEST UPDATE | GRADED A+

Which of the following is NOT associated with the work of Paul Ehrlich? sulfanilamide the concept of the "magic bullet" arsenic compounds the concept of chemotherapy Correct Answer: sulfanilamide Paul Ehrlich's idea of the "magic bullet" was the first step in the field of chemotherapy and resulted in the use of arsenic compounds in the treatment of syphilis. Sulfanilamide was the discovery of Gerhard Domagk. Which of the following is NOT a direct mode of action of antimicrobial drugs? inhibition of cell wall synthesis inhibition of protein synthesis inhibition of nucleic acid synthesis inhibition of flagella formation 2 Correct Answer: inhibition of flagella formation. Antimicrobial drugs can inhibit protein or nucleic acid synthesis and can also inhibit the formation of the cell wall. Inhibition of flagella formation might be an indirect result of the action of some antimicrobial drugs, but it is not a direct target. Which of the following is NOT a beta-lactam antibiotic? methicillin vancomycin cephalothin penicillin G Correct Answer: Vancomycin. Methicillin, penicillin G, and cephalothin are all examples of beta-lactam antibiotics. Vancomycin inhibits cell wall formation in bacteria, but it has a different chemical structure. Clavulanic acid could be used to protect which of the following antibiotics in a drug formulation? penicillin sulfanilamide bacitracin erythromycin Correct Answer: penicillin