Question

Agonists cannot:

• A. inhibit function of receptors
• B. mimic natural chemical messengers
• C. control body temperature during fever
• D. relieve the pain

Answer 1

Answer: (A), (C), (D)

The correct options are
A inhibit function of receptors
C control body temperature during fever
D relieve the pain

Agonist: A substance that acts like another substance and therefore stimulates an action. Agonist is the opposite of antagonist. Antagonists and agonists are key players in the chemistry of the human body and in pharmacology.
An agonist is a chemical that binds to a receptor and activates the receptor to produce a biological response. Whereas an agonist causes an action, an antagonist blocks the action of the agonist and an inverse agonist causes an action opposite to that of the agonist.
Receptors can be activated by either endogenous (such as hormones and neurotransmitters) or exogenous (such as drugs) agonists, resulting in a biological response. A physiological agonist is a substance that creates the same bodily responses but does not bind to the same receptor.