1|Page
LATEST HOSA PHARMACOLOGY EXAM
2025/2026 TESTBANK AND A NEW
UPDATED STUDY GUIDE ALL 900
COMPLETE ACCURATE QUESTIONS
AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) NEWEST
UPDATED VERSION 2025
agents that can disturb development of fetus or embryo -
..........ANSWER.......teratogenic drugs
a drug produced by recombinant DNA technology -
..........ANSWER.......biopharmaceutical/biologic medical product
the study and identification of natural sources of drugs -
..........ANSWER.......pharmacognosy
the science of drugs and their interactions with the systems of living
organisms - ..........ANSWER.......pharmacology
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a drug that prevents or decreases the severity of a disease -
..........ANSWER.......prophylactic drug
a drug that relieves the symptoms of a disease -
..........ANSWER.......therapeutic agent
immune system overreacts to an otherwise harmless substance -
..........ANSWER.......allergic response
a foreign substance or toxin introduced into the body that
stimulates an immune response - ..........ANSWER.......antigen
a drug that binds to a receptor site and blocks action of the
endogenous messenger on other drugs - ..........ANSWER.......antagonist
the fraction of a drug made available at the site of physiological
activity - ..........ANSWER.......bioavailability
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a barrier that prevents many substances from entering
cerebrospinal fluid (CSF) from the blood
formed by glial cells enveloping capillaries in CNS
permeable to lipid-soluble substances (but not water-soluble) -
..........ANSWER.......blood-brain barrier
point at which no clinical response occurs with increases dosage of
drug - ..........ANSWER.......ceiling effect
rate at which drug is eliminated from a specific volume of blood per
unit of time - ..........ANSWER.......clearance
process where a drug blocks enzyme activity and impairs
metabolism of another drug
can usually be overcome by increasing dosage of drug -
..........ANSWER.......competitive inhibition
state in which drug cannot be metabolized by a person's body,
regardless of dosage - ..........ANSWER.......complete inhibition
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a disease, condition, or symptom for which a drug will not be
beneficial and may do harm - ..........ANSWER.......contraindication
uptake of essential nutrients and drugs into bloodstream -
..........ANSWER.......absorption
a dependence characterized by a perceived need to take a drug to
attain the psychological+physical effects of mood-altering
substances - ..........ANSWER.......addiction
strength by which a particular chemical messenger binds to its
receptor site on a cell - ..........ANSWER.......affinity
a drug that binds to a particular receptor site and triggers the cell's
response in a manner similar to the action of the body's own
chemical messenger - ..........ANSWER.......agonist
system of enzymes that plays a key role in oxidizing drugs and other
substances - ..........ANSWER.......cytochrome P-450
LATEST HOSA PHARMACOLOGY EXAM
2025/2026 TESTBANK AND A NEW
UPDATED STUDY GUIDE ALL 900
COMPLETE ACCURATE QUESTIONS
AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) NEWEST
UPDATED VERSION 2025
agents that can disturb development of fetus or embryo -
..........ANSWER.......teratogenic drugs
a drug produced by recombinant DNA technology -
..........ANSWER.......biopharmaceutical/biologic medical product
the study and identification of natural sources of drugs -
..........ANSWER.......pharmacognosy
the science of drugs and their interactions with the systems of living
organisms - ..........ANSWER.......pharmacology
,2|Page
a drug that prevents or decreases the severity of a disease -
..........ANSWER.......prophylactic drug
a drug that relieves the symptoms of a disease -
..........ANSWER.......therapeutic agent
immune system overreacts to an otherwise harmless substance -
..........ANSWER.......allergic response
a foreign substance or toxin introduced into the body that
stimulates an immune response - ..........ANSWER.......antigen
a drug that binds to a receptor site and blocks action of the
endogenous messenger on other drugs - ..........ANSWER.......antagonist
the fraction of a drug made available at the site of physiological
activity - ..........ANSWER.......bioavailability
,3|Page
a barrier that prevents many substances from entering
cerebrospinal fluid (CSF) from the blood
formed by glial cells enveloping capillaries in CNS
permeable to lipid-soluble substances (but not water-soluble) -
..........ANSWER.......blood-brain barrier
point at which no clinical response occurs with increases dosage of
drug - ..........ANSWER.......ceiling effect
rate at which drug is eliminated from a specific volume of blood per
unit of time - ..........ANSWER.......clearance
process where a drug blocks enzyme activity and impairs
metabolism of another drug
can usually be overcome by increasing dosage of drug -
..........ANSWER.......competitive inhibition
state in which drug cannot be metabolized by a person's body,
regardless of dosage - ..........ANSWER.......complete inhibition
, 4|Page
a disease, condition, or symptom for which a drug will not be
beneficial and may do harm - ..........ANSWER.......contraindication
uptake of essential nutrients and drugs into bloodstream -
..........ANSWER.......absorption
a dependence characterized by a perceived need to take a drug to
attain the psychological+physical effects of mood-altering
substances - ..........ANSWER.......addiction
strength by which a particular chemical messenger binds to its
receptor site on a cell - ..........ANSWER.......affinity
a drug that binds to a particular receptor site and triggers the cell's
response in a manner similar to the action of the body's own
chemical messenger - ..........ANSWER.......agonist
system of enzymes that plays a key role in oxidizing drugs and other
substances - ..........ANSWER.......cytochrome P-450
