Microbiology chapter 20 test bank questions.docx

Which of the following statements about drugs that

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38) Which of the following statements about drugs that competitively inhibit DNA polymerase or RNA  polymerase is FALSE? A) They can potentially cause mutations. B) They are used against viral infections. C) They can affect host cell DNA synthesis. D) They cause cellular plasmolysis. E) They interfere with protein synthesis. Answer:  D Section:  20.3 39) Figure 20.3 The substrate for transpeptidase used to synthesize peptidoglycan is shown in Figure 20.3. Which of the  drugs shown would inhibit peptidoglycan synthesis? Section:  20.3
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40) Figure 20.4 The structures of the influenza drug Tamiflu and sialic acid, the substrate for influenza viruss neuramidase,  are shown in Figure 20.4. What is the method of action of Tamiflu? 41) Which of the following does NOT affect eukaryotic cells? Section:  20.4 42) Mebendazole is used to treat cestode infections. It interferes with microtubule formation; therefore, it  would NOT affect A) bacteria. B) fungi. C) helminths. D) human cells. E) protozoa. Answer:  A Section:  20.4
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43) Which of the following antibiotics causes misreading of mRNA? Section:  20.4 44) The antibiotic actinomycin D binds between adjacent G-C pairs, thus interfering with Section:  20.3 45) Use of antibiotics in animal feed leads to antibiotic-resistant bacteria because Section:  20.620.2   True/False Questions
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1) An antibiotic that attacks the LPS layer would be expected to have a narrow spectrum of activity. Answer:    TRUE Section:  20.2 Blooms Taxonomy:  Comprehension ASMcue Outcome:  3.4 Learning Outcome:  20.4 2) PABA serves as the competitive inhibitor in the action of sulfanilamides.
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