Actual Questions and Answers
Expert-Verified Explanation
This Exam contains:
✪ 50 Questions and Answers
✪ Multiple-choice and True/False Format
✪ Expert-Verified Explanations
✪ Verified with Trusted Textbooks
1. What does pharmacokinetics study?
A. Effects of drugs on pathogens
B. Movement of drugs through the body
C. Drug-receptor interactions
D. Patient adherence to medication
Answer: B
EXPLANATION: Pharmacokinetics involves how a drug is absorbed, distributed, metabolized,
and excreted — think "movement."
2. Pharmacodynamics refers to:
A. How the body alters drug chemistry
B. The cost of a medication
C. Biochemical and physiologic drug effects
D. Drug elimination pathways
Answer: C
EXPLANATION: Pharmacodynamics focuses on how the drug affects the body — think
“dynamic” or changes.
3. Which of the following is NOT a main drug action?
A. Stimulation
B. Depression
C. Reversal
D. Blocking
Answer: C
EXPLANATION: Main drug actions include stimulation, depression, blocking, stabilizing, and
replacing substances.
, 4. How do drugs achieve their desired activity?
A. Only via enzyme interactions
B. Interaction with receptor sites
C. By altering DNA
D. Only by disrupting the cell wall
Answer: B
EXPLANATION: Drugs work through several mechanisms, most notably by binding to
receptors or disrupting cellular processes.
5. What defines the therapeutic window?
A. The duration of peak effectiveness
B. The range between effective and toxic doses
C. The dosage causing hallucinations
D. The bioavailability curve
Answer: B
EXPLANATION: It's the safe range where a drug is effective without causing unacceptable
side effects.
6. What is the duration of action?
A. Peak blood level of a drug
B. Time from administration to peak
C. How long the drug is effective
D. Total elimination time
Answer: C
EXPLANATION: Duration of action is how long the drug continues to exert its effect.
7. Define bioavailability.
A. Total drug in the GI tract
B. Proportion of drug reaching site of action
C. Drug concentration in plasma
D. Amount excreted unchanged
Answer: B
EXPLANATION: Bioavailability is the fraction of administered drug reaching systemic
circulation.
8. Which is NOT one of the 6 rights of medication administration?
A. Right location
B. Right dose