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: Biochemistry
[{'content': 'The fluid mosaic model of membrane structure was proposed by: \nSelect and explain. \nA. Singer and Nicolson, B. Danielle, C. Overton, D. Gorion', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Fluid mosaic model, proposed by Singer and Nicolson, is a more recent and acceptable model for membrane structure.\xa0\nThe biological membrane usually have a thickness of 5-8 nm.\nA membrane is essentially composed of a lipid bilayer.\nThe hydrophobic( nonpolar) regions of the lipids face each other at the core of the bilayer while the hydrophilic( polar) regions face outward.\nGlobular proteins are irregularly embedded in the lipid bilayer\n\nKey Concept:\nFluid mosaic model was proposed by Singer and Nicolson\nRef : Textbook of Biochemistry, Satyanarayana', 'role': 'assistant'}]