6. 101-Microbiology Lecture Quiz # 2 Dean Maria Vogelstein Name: Multiple Choice

Question

6. 101-Microbiology Lecture Quiz # 2 Dean Maria Vogelstein Name: Multiple Choice -Place the Letter on the Answer Sheet for each of the following question (3.33 pts. each ) 1) A collection of similar Orders is known as a: A) Phylum B) Domain C) Family D) Class Which of the following is not an example of a genotypic characteristic used in ide microorganisms: 2) A) nucleic acid probe test B) protein profile C) nucleic acid amplification test D) sequencing rRNA genes Proteins and Carbohydrates that vary among strains can be studied in A) biochemical typing B) antibiograms C) molecular typing D) serologica Antimicrobial medications that exhibit selective toxicity cause to the microbes than to the human host: A) lesser B) no C) greater D) equal 3) 4) 5) Combinations of antimicrobial medications where the activity of one medication the activity of the other medication are known to be A) antagonistic B) synergistic C) additive D) none of the above Streptomycin can cause which of the following toxic effects: A) kidney damage B) impair sense of balance C) cause irreversible deafness D) all of the above 6) Which of the following is a broad spectrum penicillin? A) ampicillin B) augmentin C) ticarcillin D) ceftaroline 7) Which of the following antibacterial medications interfere with the initiation a synthesis? A) tetracycline B) oxazolidinones C) pleuromutilin D) chloramphenicol 8) 9) Atypical pneumonia ("walking pneumonia") can be treated effectively with A) erythromycin B) gentamycin C) penicillin D) clindamycin

Explanation / Answer

1. Option D - Class

2. Option B - Protein profile

Reason: Genotypic characteristics comprises of nucleic acid analysis such as DNA and RNA studies. Protein profile is different from nucleic acid studies.

3. Option A - Biochemical typing.

Reason: This technique is based on several biochemical tests which helps to characterize the bacteria based on the results of these tests.

4. Option C - Greater

Reason: Selective toxicity is a condition in which the drug selectively inhibits the target cells or organisms. Antimicrobial agents are used for killing pathogens without affecting the normal cells of the host. Hence, they have a greater effect on microbes than to the human host.

5. Antagonistic - If one medication reduces the activity of other medication

Synergistic - If one medication benefits the other medication

Additive - If both the medications together increases the activity

6. Option d - all of the above

7. Option a - Ampicillin

9. Option a - Erythromycin

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