ANP 1105 Chapter Notes - Chapter 1: Keratin, Cytosol, Osmoregulation
22 Mar 2016
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Document Summary
The fluid mosaic depicts the plasma membrane as a double layer of phospholipids with embedded proteins. Phospholipids are molar molecules with hydrophilic tails and hydrophobic heads that make up the cell membrane in a sandwich like structure (dynamic fluid structure) Glycolipids have lipids with attached sugar groups and can be found on the surface of the plasma membrane (the sugar groups make the molecules polar) Cholesterol makes up 20% of the lipid membrane; the hydroxyl group makes the molecule polar and allows it to act like a phospholipid. Integral proteins (transmembrane proteins) are securely embedded in the cell membrane and have both hydrophilic and hydrophobic regions; some form channels, pores, or acts as carriers. Cholesterol in the membrane reduces fluidity and stabilizes the structure. Glycoproteins and glycolipids that form a fuzzy area sugar coating on the surface of the cell. Provides biological markers (increase recognition) in the form of a unique sugar coating on the surface of the cell.
