Which of the following describes the action of an agonist?
A molecule that prevents receptor activation by other medications
An endogenous molecule or a medication that can activate a receptor
A medication that increases the affinity of a receptor for a different medication
A therapeutic agent that both blocks and activates a receptor
The Correct Answer is B
An agonist is a molecule that can bind to and activate a receptor to induce a biological response ³. Agonists can be endogenous molecules, such as hormones or neurotransmitters, or medications that mimic the action of endogenous agonists ³.
Option A is incorrect because an agonist does not prevent receptor activation by other medications.
Option C is incorrect because an agonist does not increase the affinity of a receptor for a different medication.
Option D is incorrect because an agonist does not both block and activate a receptor.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
An agonist is a molecule that can bind to and activate a receptor to induce a biological response ³. Agonists can be endogenous molecules, such as hormones or neurotransmitters, or medications that mimic the action of endogenous agonists ³.
Option A is incorrect because an agonist does not prevent receptor activation by other medications.
Option C is incorrect because an agonist does not increase the affinity of a receptor for a different medication.
Option D is incorrect because an agonist does not both block and activate a receptor.
Correct Answer is D
Explanation
Alprazolam is a benzodiazepine that is commonly used to treat anxiety disorders and panic disorders ¹². It works by enhancing the activity of certain neurotransmiters in the brain ¹.
Option A is not correct because alprazolam does suppress the central nervous system ¹.
Option B is not correct because alprazolam does not cure generalized anxiety but rather helps manage its symptoms ¹².
Option C is not correct because physical dependence can be a risk when taking alprazolam ¹.
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