This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
[{'content': 'Which of the following most accurately describes the transmembrane signalling process involved in the steroid hormone action \nSelect and explain. \nA. Action on a membrane spanning tyrosine kinase, B. Action of a G protein which activates or inhibits adenylyl cyclase, C. Diffusion across a membrane and binding to an intracellular receptor, D. Opening of transmembrane Ion channels', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref-KDT 6/e p51 Steroid hormones and lipids soluble and act on cytoplasmic receptor after crossing the plasma membrane', 'role': 'assistant'}]