Missouri Pharmacist Licensure Exam
Practice Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. A patient is prescribed digoxin. Which electrolyte imbalance increases
the risk of digoxin toxicity?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia
D. Hypermagnesemia
Correct answer: B
Rationale: Low potassium levels increase digoxin binding to cardiac
tissue, raising toxicity risk.
2. Which federal law regulates controlled substances in the United
States?
A. HIPAA
B. FDA Modernization Act
, C. Controlled Substances Act
D. Durham-Humphrey Amendment
Correct answer: C
Rationale: The Controlled Substances Act classifies and regulates
narcotics and other controlled drugs.
3. What is the primary mechanism of action of beta-lactam antibiotics?
A. Inhibit protein synthesis
B. Disrupt cell wall synthesis
C. Inhibit DNA gyrase
D. Block folate synthesis
Correct answer: B
Rationale: Beta-lactams inhibit bacterial cell wall synthesis by
binding penicillin-binding proteins.
4. Which insulin is considered rapid-acting?
A. NPH
B. Glargine
C. Lispro
D. Detemir
Correct answer: C
Rationale: Insulin lispro has a rapid onset and is used at mealtime.
5. A prescription reads: Amoxicillin 500 mg TID for 10 days. How many
capsules are needed?
, A. 10
B. 20
C. 30
D. 40
Correct answer: C
Rationale: TID for 10 days equals 3 × 10 = 30 doses.
6. Which drug is a proton pump inhibitor?
A. Ranitidine
B. Omeprazole
C. Famotidine
D. Calcium carbonate
Correct answer: B
Rationale: Omeprazole inhibits gastric acid secretion by blocking
proton pumps.
7. Which adverse effect is most associated with ACE inhibitors?
A. Hypokalemia
B. Dry cough
C. Hyperglycemia
D. Bradycardia
Correct answer: B
Rationale: ACE inhibitors increase bradykinin leading to dry cough.
, 8. Which vaccine is a live attenuated vaccine?
A. Influenza injection
B. Hepatitis B
C. MMR
D. Tetanus toxoid
Correct answer: C
Rationale: MMR is a live attenuated vaccine containing weakened
viruses.
9. Which route provides the fastest drug absorption?
A. Oral
B. Intramuscular
C. Intravenous
D. Subcutaneous
Correct answer: C
Rationale: IV administration delivers drug directly into bloodstream.
10. Warfarin acts by inhibiting:
A. Thrombin directly
B. Vitamin K epoxide reductase
C. Platelet aggregation
D. Factor Xa directly
Correct answer: B
Practice Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. A patient is prescribed digoxin. Which electrolyte imbalance increases
the risk of digoxin toxicity?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia
D. Hypermagnesemia
Correct answer: B
Rationale: Low potassium levels increase digoxin binding to cardiac
tissue, raising toxicity risk.
2. Which federal law regulates controlled substances in the United
States?
A. HIPAA
B. FDA Modernization Act
, C. Controlled Substances Act
D. Durham-Humphrey Amendment
Correct answer: C
Rationale: The Controlled Substances Act classifies and regulates
narcotics and other controlled drugs.
3. What is the primary mechanism of action of beta-lactam antibiotics?
A. Inhibit protein synthesis
B. Disrupt cell wall synthesis
C. Inhibit DNA gyrase
D. Block folate synthesis
Correct answer: B
Rationale: Beta-lactams inhibit bacterial cell wall synthesis by
binding penicillin-binding proteins.
4. Which insulin is considered rapid-acting?
A. NPH
B. Glargine
C. Lispro
D. Detemir
Correct answer: C
Rationale: Insulin lispro has a rapid onset and is used at mealtime.
5. A prescription reads: Amoxicillin 500 mg TID for 10 days. How many
capsules are needed?
, A. 10
B. 20
C. 30
D. 40
Correct answer: C
Rationale: TID for 10 days equals 3 × 10 = 30 doses.
6. Which drug is a proton pump inhibitor?
A. Ranitidine
B. Omeprazole
C. Famotidine
D. Calcium carbonate
Correct answer: B
Rationale: Omeprazole inhibits gastric acid secretion by blocking
proton pumps.
7. Which adverse effect is most associated with ACE inhibitors?
A. Hypokalemia
B. Dry cough
C. Hyperglycemia
D. Bradycardia
Correct answer: B
Rationale: ACE inhibitors increase bradykinin leading to dry cough.
, 8. Which vaccine is a live attenuated vaccine?
A. Influenza injection
B. Hepatitis B
C. MMR
D. Tetanus toxoid
Correct answer: C
Rationale: MMR is a live attenuated vaccine containing weakened
viruses.
9. Which route provides the fastest drug absorption?
A. Oral
B. Intramuscular
C. Intravenous
D. Subcutaneous
Correct answer: C
Rationale: IV administration delivers drug directly into bloodstream.
10. Warfarin acts by inhibiting:
A. Thrombin directly
B. Vitamin K epoxide reductase
C. Platelet aggregation
D. Factor Xa directly
Correct answer: B
