This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cell Membrane and transpo protiens, Subject name: Physiology
[{'content': 'Structurally the connexons are: \nSelect and explain. \nA. Hexamers, B. Pentamers, C. Tetramers, D. Trimeric proteins', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A connexon is composed of six integral membrane protein(Hexamers), having subunits called connexins. Ligand-gated ion channels are made up of pentameric proteins. Voltage-gated ion channels are made up of tetrameric proteins. G-protein, ENaC are the examples of trimeric proteins.', 'role': 'assistant'}]