Applied Pharmacology Principles
90 min · Pass mark 70%
Part A: Drug Action and Receptors 18 MIN
1 MULTIPLE CHOICE
A patient receives a chemical intended to reduce a disease symptom by changing a body function. The treatment
binds to a cellular protein and produces a response. Which pair of concepts best describes the treatment and how
it works?
A A dosage and pharmacokinetics
B A drug and pharmacodynamics
C A side effect and bioavailability
D A route of administration and tolerance
2 MULTIPLE CHOICE
A candidate medicine binds to a specific protein on a cell, and a measurable response follows. A second medicine
binds at that protein but reduces the response to the candidate medicine. What roles do the two medicines have?
A The first is an agonist, and the second is an antagonist
B The first is an antagonist, and the second is an agonist
C Both are agonists because both bind to the protein
D Both are antagonists because the second reduces the response
3 MULTIPLE CHOICE
A drug binds to a protein inside a cell, and this binding is followed by a biological response. The patient's clinician
wants to understand how the binding produces that response. Which area of pharmacology is most directly
relevant?
A Bioavailability, because it describes the response after binding
B Pharmacokinetics, because it studies receptor activation
C Dosage, because it describes the drug's mechanism
D Pharmacodynamics, because it studies drug effects and mechanisms
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, 4 MULTIPLE CHOICE
A compound binds to a receptor and produces a response similar to the body's natural chemical. Another
compound binds to the same receptor but reduces that response. Which interpretation fits both observations?
A The first compound is an antagonist, and the second is an agonist
B Both compounds are antagonists because only natural chemicals activate receptors
C Both compounds are agonists because they bind to the receptor
D The first compound is an agonist, and the second is an antagonist
5 MULTIPLE CHOICE
A clinician compares two medicines that bind to receptors. One medicine activates its receptor, while the other
binds but prevents the activating medicine from producing its usual response. Which statement correctly links
receptor binding with drug action?
A Receptor binding can lead to activation by an agonist or blockade by an antagonist
B An antagonist produces its effect by increasing the agonist's response
C Receptors are amounts of drug administered to a patient
D Any drug that binds a receptor must activate it
6 MULTIPLE CHOICE
A medicine changes a body function by binding to a target protein and activating it. The care team is asked both
what the medicine does to the body and what kind of receptor-binding action it has. Which answer addresses both
questions?
A Its effects are studied in pharmacodynamics, and its action is agonism
B Its effects are described by dosage, and its action is bioavailability
C Its effects are studied in pharmacokinetics, and its action is antagonism
D Its effects are described by tolerance, and its action is a route of administration
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, 7 MULTIPLE CHOICE
A new agent binds a receptor but does not produce the response seen when the body's natural chemical binds.
When the natural chemical is present, the agent reduces its effect. How should the agent be classified?
A As a therapeutic index
B As an agonist
C As an antagonist
D As a dosage
8 MULTIPLE CHOICE
A team measures how a drug's concentration relates to the response it produces. It also identifies a specific
protein to which the drug binds. Which pairing is correct?
A The concentration-response relationship is pharmacodynamics, and the protein is a receptor
B The concentration-response relationship is pharmacokinetics, and the protein is a dosage
C The concentration-response relationship is bioavailability, and the protein is an antagonist
D The concentration-response relationship is tolerance, and the protein is a route
9 MULTIPLE CHOICE
A drug binds a receptor and activates it, producing a response. A different drug is then given and the response
becomes smaller despite the first drug still being present. Which explanation best fits the second drug's action?
A It may be an antagonist that reduces the agonist's effect
B It is bioavailability because the receptor response is smaller
C It is the dosage because the response has changed
D It must be an agonist because it binds to a receptor
10 MULTIPLE CHOICE
A medicine produces an intended change in body function, and investigators study both its binding target and the
resulting response. Which statement best connects these observations?
A The medicine is a route, and its target and response are studied through tolerance
B The medicine is a drug, and its target and response are studied through pharmacodynamics
C The medicine is a receptor, and its target and response are studied through dosage
D The medicine is a side effect, and its target and response are studied through excretion
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