Your doctor has just prescribed an inhaled steroid-based drug to treat your asthma. what do you predict about its mechanism of action? a. the drug binds to receptors on the cell membrane, activating a second messenger pathway that phosphorylates a set of target proteins. b. the drug binds to an extracellular receptor, then crosses the cell membrane where it directly phosphorylates a set of target proteins. c. the drug crosses cell membranes, binds to an intracellular receptor, enters the nucleus and regulates gene transcription. d. the drug acts in the bloodstream to bind and sequester antibodies and thereby reduce inflammation in the lungs.