This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'The transmembrane region of the protein is likely to have- \nSelect and explain. \nA. A stretch of hydrophilic amino acids, B. A stretch of hydrophobic amino acids, C. A disulphide loop, D. Alternating hydrophilic and hydrophobic amino acids', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The transmembrane proteins lie similar to that of the lipid bilayer. The lipid bilayer is hydrophilic in the outer and the inner parts and has a hydrophobic core. \nSimilarly, the transmembrane proteins have outer and inner ends which are hydrophilic and a core which is hydrophobic. \nSo the transmembrane region of the protein is hydrophobic.', 'role': 'assistant'}]