Pharmacology Which of the following most accurately describes the transmembrane signaling process involved in the steroid hormone action? A Action on a membrane spanning tyrosine kinase B Action of a G protein, which activates or inhibits adenylyl cyclase C Diffusion across the membrane and binding to an intracellular receptor D Opening of transmembrane ion channels 💡 Explanation Which of the following most accurately describes the transmembrane signaling process involved in the steroid hormone action? ✓ Correct Answer: C. Diffusion across the membrane and binding to an intracellular receptor