Term
|
Definition
| The phosphorus-containing "head" of a phospholipid is electrically charged and therefore associates with polar water molecules |
|
|
Term
|
Definition
| the long, non polar fatty acid "tails" of a phospholipid associate with other nonpolar materials, but they do not dissolve in water or associate with hydrophilic substances |
|
|
Term
| Peripheral membrane proteins |
|
Definition
| lack exposed hydrophobic groups and are not embedded in the bilayer. instead, they have polar or charged regions that interact with exposed parts of integral membrane proteins, or with the polar heads of phospholipid molecules |
|
|
Term
| integral membrane proteins |
|
Definition
| at least partly embedded in the phospholipid bilayer. like phospholipids, these proteins have both hydrophillic and hydrophobic regions |
|
|
Term
|
Definition
| consists of a carbohydrate covalently bonded to a lipid. extending outside the cell surface, the carbohydrate may serve as a recognition signal for interactions between cells |
|
|
Term
|
Definition
| consists of a carbohydrate covalently bonded to a protein. the bound carbohydrate is an oligosaccharide of 15 fewer monosaccaride units. these oligosaccharides often function as signaling sites, as do the carbohydrates attached glycolipids |
|
|
