BIO 290 Exam 1 Actual Exam V3 | BIO 290 Pharmacology (BIO290
Exam 1) | Joyce University
1. Which term describes the study of how a drug moves through the body, including
absorption, distribution, metabolism, and excretion?
A. Pharmacodynamics
B. Pharmacokinetics
C. Pharmacotherapeutics
D. Pharmacogenetics
Answer: B
Rationale: Pharmacokinetics focuses on the movement of drugs within the body over time.
It specifically encompasses the four processes of absorption, distribution, metabolism, and
excretion. Understanding these phases is crucial for determining the appropriate dosage
and frequency of medication administration.
2. A patient is taking a drug that has a very narrow therapeutic index. What does this indicate
to the nurse?
A. The difference between a therapeutic dose and a toxic dose is small.
B. The drug has a high potential for addiction.
C. The drug is very safe and does not require monitoring.
D. The drug is only effective if given by the intravenous route.
Answer: A
Rationale: A narrow therapeutic index means that the margin between a dose that is
effective and one that is toxic is very slim. This requires the nurse to monitor blood levels
closely to ensure patient safety. Frequent laboratory testing is often necessary for
medications in this category, such as lithium or digoxin.
3. Which of the following describes the ‘first-pass effect’?
A. The rapid distribution of a drug to the heart and brain.
B. The metabolism of a drug by the liver before it reaches systemic circulation.
C. The excretion of a drug by the kidneys on the first cycle.
D. The binding of a drug to plasma proteins in the blood.
Answer: B
,Rationale: The first-pass effect occurs when an oral medication is absorbed from the GI
tract and carried directly to the liver via the portal vein. The liver metabolizes a significant
portion of the drug, reducing the amount that eventually reaches the systemic circulation.
This is why some drugs must be given via non-oral routes to be effective.
4. A drug that binds to a receptor and produces a maximal biological response is called a(n):
A. Agonist
B. Partial Agonist
C. Antagonist
D. Inhibitor
Answer: A
Rationale: An agonist is a chemical that binds to a receptor and activates the receptor to
produce a biological response. It mimics the action of endogenous substances in the body.
In contrast, an antagonist blocks the receptor site to prevent a response.
5. What is the primary organ responsible for the metabolism of most drugs?
A. Kidneys
B. Lungs
C. Liver
D. Small Intestine
Answer: C
Rationale: The liver is the most important site for drug metabolism because it contains the
cytochrome P450 enzyme system. Metabolism transforms drugs into water-soluble
metabolites that can be more easily excreted by the kidneys. Dysfunction in the liver can
lead to drug toxicity due to decreased clearance.
6. Which route of administration provides the fastest onset of action?
A. Oral (PO)
B. Subcutaneous (SQ)
C. Intramuscular (IM)
D. Intravenous (IV)
Answer: D
Rationale: The intravenous route delivers medication directly into the bloodstream,
bypassing the absorption process entirely. This results in an immediate onset of action,
which is vital in emergency situations. However, this route also carries the highest risk of
immediate adverse reactions.
, 7. A nurse is preparing to administer a medication. Which ‘right’ of medication administration
is being checked when the nurse confirms the patient’s identity using two identifiers?
A. Right Dose
B. Right Route
C. Right Documentation
D. Right Patient
Answer: D
Rationale: Confirming the right patient is the first step in the medication administration
process to prevent errors. Common identifiers include the patient’s full name and date of
birth. This practice ensures that the medication reaches the intended recipient safely.
8. If a drug has a half-life of 4 hours and a dose of 100 mg is given, how much drug remains in
the body after 8 hours?
A. 50 mg
B. 12.5 mg
C. 25 mg
D. 0 mg
Answer: C
Rationale: Half-life is the time required for the concentration of a drug to decrease by
50%. After 4 hours (one half-life), 50 mg remains; after 8 hours (two half-lives), 25 mg
remains. This concept is essential for determining dosing intervals.
9. Which pregnancy category indicates that studies in animals or humans have demonstrated
fetal abnormalities and the risk outweighs any possible benefit?
A. Category A
B. Category B
C. Category X
D. Category C
Answer: C
Rationale: Category X drugs are strictly contraindicated in women who are or may become
pregnant because they cause proven fetal harm. The risks involved in using these drugs
always outweigh the potential benefits. Healthcare providers must ensure pregnancy tests
are negative before starting these medications.
10. The process by which a drug leaves the bloodstream and enters the tissues is known as:
A. Absorption
Exam 1) | Joyce University
1. Which term describes the study of how a drug moves through the body, including
absorption, distribution, metabolism, and excretion?
A. Pharmacodynamics
B. Pharmacokinetics
C. Pharmacotherapeutics
D. Pharmacogenetics
Answer: B
Rationale: Pharmacokinetics focuses on the movement of drugs within the body over time.
It specifically encompasses the four processes of absorption, distribution, metabolism, and
excretion. Understanding these phases is crucial for determining the appropriate dosage
and frequency of medication administration.
2. A patient is taking a drug that has a very narrow therapeutic index. What does this indicate
to the nurse?
A. The difference between a therapeutic dose and a toxic dose is small.
B. The drug has a high potential for addiction.
C. The drug is very safe and does not require monitoring.
D. The drug is only effective if given by the intravenous route.
Answer: A
Rationale: A narrow therapeutic index means that the margin between a dose that is
effective and one that is toxic is very slim. This requires the nurse to monitor blood levels
closely to ensure patient safety. Frequent laboratory testing is often necessary for
medications in this category, such as lithium or digoxin.
3. Which of the following describes the ‘first-pass effect’?
A. The rapid distribution of a drug to the heart and brain.
B. The metabolism of a drug by the liver before it reaches systemic circulation.
C. The excretion of a drug by the kidneys on the first cycle.
D. The binding of a drug to plasma proteins in the blood.
Answer: B
,Rationale: The first-pass effect occurs when an oral medication is absorbed from the GI
tract and carried directly to the liver via the portal vein. The liver metabolizes a significant
portion of the drug, reducing the amount that eventually reaches the systemic circulation.
This is why some drugs must be given via non-oral routes to be effective.
4. A drug that binds to a receptor and produces a maximal biological response is called a(n):
A. Agonist
B. Partial Agonist
C. Antagonist
D. Inhibitor
Answer: A
Rationale: An agonist is a chemical that binds to a receptor and activates the receptor to
produce a biological response. It mimics the action of endogenous substances in the body.
In contrast, an antagonist blocks the receptor site to prevent a response.
5. What is the primary organ responsible for the metabolism of most drugs?
A. Kidneys
B. Lungs
C. Liver
D. Small Intestine
Answer: C
Rationale: The liver is the most important site for drug metabolism because it contains the
cytochrome P450 enzyme system. Metabolism transforms drugs into water-soluble
metabolites that can be more easily excreted by the kidneys. Dysfunction in the liver can
lead to drug toxicity due to decreased clearance.
6. Which route of administration provides the fastest onset of action?
A. Oral (PO)
B. Subcutaneous (SQ)
C. Intramuscular (IM)
D. Intravenous (IV)
Answer: D
Rationale: The intravenous route delivers medication directly into the bloodstream,
bypassing the absorption process entirely. This results in an immediate onset of action,
which is vital in emergency situations. However, this route also carries the highest risk of
immediate adverse reactions.
, 7. A nurse is preparing to administer a medication. Which ‘right’ of medication administration
is being checked when the nurse confirms the patient’s identity using two identifiers?
A. Right Dose
B. Right Route
C. Right Documentation
D. Right Patient
Answer: D
Rationale: Confirming the right patient is the first step in the medication administration
process to prevent errors. Common identifiers include the patient’s full name and date of
birth. This practice ensures that the medication reaches the intended recipient safely.
8. If a drug has a half-life of 4 hours and a dose of 100 mg is given, how much drug remains in
the body after 8 hours?
A. 50 mg
B. 12.5 mg
C. 25 mg
D. 0 mg
Answer: C
Rationale: Half-life is the time required for the concentration of a drug to decrease by
50%. After 4 hours (one half-life), 50 mg remains; after 8 hours (two half-lives), 25 mg
remains. This concept is essential for determining dosing intervals.
9. Which pregnancy category indicates that studies in animals or humans have demonstrated
fetal abnormalities and the risk outweighs any possible benefit?
A. Category A
B. Category B
C. Category X
D. Category C
Answer: C
Rationale: Category X drugs are strictly contraindicated in women who are or may become
pregnant because they cause proven fetal harm. The risks involved in using these drugs
always outweigh the potential benefits. Healthcare providers must ensure pregnancy tests
are negative before starting these medications.
10. The process by which a drug leaves the bloodstream and enters the tissues is known as:
A. Absorption
