问答题 The basic structure of biological membranes is determined by the lipid bilayer, but their specific functions are carried out largely by proteins. Explain your answer.
【正确答案】答: 脂双层决定了膜结构, 并提供了渗透性的障碍, 使得细胞内外两侧隔离。特异 的膜蛋白允许特异的溶质进出膜、结合信号分子、介导细胞外基质的附着。
【答案解析】