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Microbiology Study Set 1

Biology

Quiz 20 :

Antimicrobial Drugs

Quiz 20 :

Antimicrobial Drugs

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In what way are semisynthetic penicillins and natural penicillins alike?
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Answer:

D

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Which of the following antibiotics causes misreading of mRNA?
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Answer:

C

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Which of the following antibiotics are used to treat fungal infections? 1. aminoglycosides 2) cephalosporins 3) griseofulvin 4) polyenes 5) bacitracin
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Answer:

B

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In Table 20.2, the antibiotic that exhibited bactericidal action was
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In the presence of penicillin, a cell dies because
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Figure 20.1 img -The antibiotic tetracycline binds to the 30S subunit of the ribosome, as shown in Figure 20.1. The effect is to
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Mebendazole is used to treat cestode infections. It interferes with microtubule formation; therefore, it would NOT affect
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Lamisil is an allylamine used to treat dermatomycoses. Lamisil's method of action is similar to that of
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Penicillin was considered a "miracle drug" for all of the following reasons EXCEPT
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Which of the following does NOT constitute an advantage of using two antibiotics together?
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Table 20.1 The following data were obtained from a broth dilution test. img -In Table 20.1, the minimal bactericidal concentration of antibiotic X is
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Figure 20.4 img -The structures of the influenza drug Tamiflu and sialic acid, the substrate for influenza virus's neuramidase, are shown in Figure 20.4. What is the method of action of Tamiflu?
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Which of the following drugs does NOT act by competitive inhibition?
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Which of the following would be selective against the tubercle bacillus?
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Which of the following methods of action would be bacteriostatic?
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To date, most of our natural antibiotics have been found to be produced by members of what genus?
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More than half of our antibiotics are
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Table 20.2 The following results were obtained from a disk- diffusion test for microbial susceptibility to antibiotics. Staphylococcus aureus was the test organism. img -In Table 20.2, the most effective antibiotic tested was
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Which of the following antibiotics is NOT bactericidal?
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Figure 20.3 img -The substrate for transpeptidase used to synthesize peptidoglycan is shown in Figure 20.3. Which of the drugs shown would inhibit peptidoglycan synthesis?
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