<prompt> Which of the following most accurately describes the transmembrane signaling process involved in the steroid hormone action?Action on a membrane spanning tyrosine kinaseAction of a G protein, which activates or inhibits adenylyl cyclaseDiffusion across the membrane and binding to an intracellular receptorOpening of transmembrane ion channels  <response>: Steroid hormones are lipid soluble and act on cytoplasmic receptors after crossing the plasma membrane. 