NUR210 FINAL EXAM AND PRACTICE EXAM (GALEN)
NEWEST 2026 TEST BANK| PRINCIPLES OF
PHARMACOLOGY FINAL EXAM PREP WITH COMPLETE
650 REAL EXAM QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) ALREADY GRADED A+
(BRAND NEW!!)
1. A nurse is preparing to administer a medication and
understands that the first-pass effect refers to:
A) The drug being excreted unchanged in the urine
B) The initial metabolism of an oral drug in the liver before
it reaches systemic circulation
C) The immediate allergic reaction after administration
D) The drug binding to plasma proteins
Correct Answer: B
Rationale: The first-pass effect occurs when orally administered
1
,drugs are absorbed from the GI tract and transported via the
portal vein to the liver, where they are partially metabolized
before reaching systemic circulation. This reduces bioavailability.
IV drugs bypass this effect .
2. Which statement best describes the difference between an
agonist and an antagonist?
A) An agonist blocks receptors; an antagonist activates
receptors
B) An agonist activates receptors to produce a response; an
antagonist blocks receptor activation
C) Both agonists and antagonists produce the same effect
D) Antagonists are always more potent than agonists
Correct Answer: B
Rationale: An agonist binds to and activates a receptor,
2
,producing a desired response. An antagonist binds to a receptor
but does not activate it, instead blocking the receptor from being
activated by agonists .
3. The nurse administers a medication that has a half-life of 4
hours. How long will it take for the drug to be reduced to
approximately 25% of its original concentration?
A) 4 hours
B) 8 hours
C) 12 hours
D) 16 hours
Correct Answer: B
Rationale: Half-life is the time required for the drug concentration
to be reduced by half. After one half-life (4 hours): 50%
remains. After two half-lives (8 hours): 25% remains .
3
, 4. A patient asks why they need to take a higher dose of a
certain medication than their friend. The nurse explains that
factors affecting drug absorption include all of the following
EXCEPT:
A) Presence of food in the stomach
B) Route of administration
C) The color of the pill
D) First-pass metabolism
Correct Answer: C
Rationale: Absorption is influenced by GI contents (food), route of
administration, blood flow, and first-pass metabolism. Pill color is
a manufacturing characteristic that does not affect absorption .
4
NEWEST 2026 TEST BANK| PRINCIPLES OF
PHARMACOLOGY FINAL EXAM PREP WITH COMPLETE
650 REAL EXAM QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) ALREADY GRADED A+
(BRAND NEW!!)
1. A nurse is preparing to administer a medication and
understands that the first-pass effect refers to:
A) The drug being excreted unchanged in the urine
B) The initial metabolism of an oral drug in the liver before
it reaches systemic circulation
C) The immediate allergic reaction after administration
D) The drug binding to plasma proteins
Correct Answer: B
Rationale: The first-pass effect occurs when orally administered
1
,drugs are absorbed from the GI tract and transported via the
portal vein to the liver, where they are partially metabolized
before reaching systemic circulation. This reduces bioavailability.
IV drugs bypass this effect .
2. Which statement best describes the difference between an
agonist and an antagonist?
A) An agonist blocks receptors; an antagonist activates
receptors
B) An agonist activates receptors to produce a response; an
antagonist blocks receptor activation
C) Both agonists and antagonists produce the same effect
D) Antagonists are always more potent than agonists
Correct Answer: B
Rationale: An agonist binds to and activates a receptor,
2
,producing a desired response. An antagonist binds to a receptor
but does not activate it, instead blocking the receptor from being
activated by agonists .
3. The nurse administers a medication that has a half-life of 4
hours. How long will it take for the drug to be reduced to
approximately 25% of its original concentration?
A) 4 hours
B) 8 hours
C) 12 hours
D) 16 hours
Correct Answer: B
Rationale: Half-life is the time required for the drug concentration
to be reduced by half. After one half-life (4 hours): 50%
remains. After two half-lives (8 hours): 25% remains .
3
, 4. A patient asks why they need to take a higher dose of a
certain medication than their friend. The nurse explains that
factors affecting drug absorption include all of the following
EXCEPT:
A) Presence of food in the stomach
B) Route of administration
C) The color of the pill
D) First-pass metabolism
Correct Answer: C
Rationale: Absorption is influenced by GI contents (food), route of
administration, blood flow, and first-pass metabolism. Pill color is
a manufacturing characteristic that does not affect absorption .
4
