Cell Structure and Function Question
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Which of the following is a principle of the fluid mosaic model of cell membrane structure?
- phospholipids form a bilayer that is largely impermeable to water-soluble molecules
- The lipid bilayer is a solid at body temperature, thus protecting the cell
- phopholipids consist of a polar head and a nonpolar tail made of three fatty acid chains
- all proteins associated with the cell membrane are contained in a fluid layer on the outside of the cell