Structure & Function
18. (www.goldiesroom.org)
1. The cell membrane employs a number of transport mechanisms such as passive diffusion, osmosis, endocytosis, and exocytosis.
2. The membrane is composed of a bilayer of lipids. Most of the lipids in the bilayer are phospholipids, which have a phosphate group at one end of each molecule. The phospholipids are referred to as hydrophilic (water-loving) at their phosphate ends and hydrophobic (water-fearing) along their lipid tail regions.
3. The positioning of the proteins along the cell membrane is related in part to the organization of the filaments that comprise the cytoskeleton, which help anchor them in place.
2. The membrane is composed of a bilayer of lipids. Most of the lipids in the bilayer are phospholipids, which have a phosphate group at one end of each molecule. The phospholipids are referred to as hydrophilic (water-loving) at their phosphate ends and hydrophobic (water-fearing) along their lipid tail regions.
3. The positioning of the proteins along the cell membrane is related in part to the organization of the filaments that comprise the cytoskeleton, which help anchor them in place.