Topic 1.2.3 Lipids- key terms
Terms in this set (16)
A large family of organic molecules that are important in cell membranes and as an energy store in many organisms. They include triglycerides, phospholipids and steroids.
An organic acid with a long hydrocarbon chain.
A propane- 1,2,3-triol, an important component of triglycerides.
A bond formed in a condensation reaction between the carboxyl group (-COOH) of a fatty acid and one of the hydroxyl groups (-OH) of glycerol.
Saturated fatty acid
A fatty acid in which each carbon atom is joined to the one next to it in the hydrocarbon chain by a single covalent bond.
Unsaturated fatty acid
A fatty acid in which the carbon atoms in the hydrocarbon chain have one or more double covalent bonds in them.
Monounsaturated fatty acid
A fatty acid with only one double covalent bond between carbon atoms in the hydrocarbon chain.
Polyunsaturated fatty acid
A fatty acid with two or more double covalent bond between carbon atoms in the hydrocarbon chain.
The formation of ester bonds.
A chemical in which glycerol bonds with two fatty acids and an inorganic phosphate group.
Molecules dissolve readily in water.
Molecules will not dissolve in water.
A single closely packed layer of atoms or molecules.
A spherical aggregate of molecules in water with hydrophobic areas in the middle and hydrophilic areas outside.
A double layer of closely packed atoms or molecules.
A bilayer structure formed by phospholipids in an aqueous environment, with the hydrophobic tails in the middle and the hydrophilic heads on the outside.