NUR 210 Exam 4 2026/2027 Galen Principles of
Pharmacology Actual Exam Verified Answers with
Detailed Rationales Study Guide Grade A
1. What is the difference between bacteriostatic and bactericidal drugs?
A. Bacteriostatic kills bacteria; bactericidal inhibits growth
B. Bacteriostatic inhibits bacterial growth; bactericidal kills bacteria
C. Both inhibit growth
D. Both kill bacteria
Correct Answer: B
Rationale: Bacteriostatic drugs inhibit bacterial growth, allowing the immune system to
eliminate the infection. Bactericidal drugs directly kill bacteria.
2. Drugs with a narrow therapeutic window require:
A. Daily dosing
B. Peak and trough levels
C. Loading doses
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D. Extended-release formulations
Correct Answer: B
Rationale: Drugs with a narrow therapeutic window require monitoring of peak and
trough levels to ensure therapeutic efficacy and prevent toxicity.
3. What factors should be considered when selecting antibiotics? (Select all that
apply.)
A. Age
B. Nutrition
C. White blood cell count
D. Immune system status
E. Organ function
Correct Answer: A, B, C, D, E
Rationale: Antibiotic selection must consider patient factors including age, nutritional
status, immune function, and organ function to ensure safety and efficacy.
4. What are narrow-spectrum antibiotics?
A. Effective against a broad range of bacteria
B. Effective against specific bacteria
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C. Effective against both gram-positive and gram-negative bacteria
D. Effective against fungi
Correct Answer: B
Rationale: Narrow-spectrum antibiotics target specific bacteria, reducing the risk of
superinfection and antibiotic resistance.
5. What are examples of narrow-spectrum antibiotics? (Select all that apply.)
A. Penicillin
B. Erythromycin
C. Tetracycline
D. Cephalosporin
Correct Answer: A, B
Rationale: Penicillin and erythromycin are narrow-spectrum antibiotics. Tetracycline
and cephalosporins are broad-spectrum.
6. What are broad-spectrum antibiotics?
A. Effective against specific bacteria
B. Effective against a broad range of gram-positive or gram-negative bacteria
C. Effective only against gram-positive bacteria
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D. Effective only against anaerobic bacteria
Correct Answer: B
Rationale: Broad-spectrum antibiotics are effective against a wide variety of bacteria,
including both gram-positive and gram-negative organisms.
7. What are examples of broad-spectrum antibiotics? (Select all that apply.)
A. Penicillin
B. Tetracycline
C. Cephalosporin
D. Erythromycin
Correct Answer: B, C
Rationale: Tetracycline and cephalosporins are broad-spectrum antibiotics. Penicillin
and erythromycin are narrow-spectrum.
8. What are adverse reactions of antibiotics? (Select all that apply.)
A. Allergic reactions (rash, pruritus, hives, anaphylaxis)
B. Superinfection (secondary infection due to disturbed normal flora)
C. Organ toxicity (liver and kidney)
D. Hypoglycemia