140 likes | 183 Views
Fatty Acids. Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12<n<20. Saturated- Unsaturated Fatty Acids. Hydrophobic- Hydrophilic Groups.
E N D
Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids :CH3 –(CH2)n –COOH 12<n<20
Hydrophobic- Hydrophilic Groups The hydrocarbon tail is extremely hydrophobic and so is insoluble in water. In contrast, the carboxylic acid group is extremely hydrophilic.
Fats • FAT consists of three- carbon backbone called glycerol attached to three fatty acids, which contain long hydrocarbon chains .
Phosphoglycerids Phospholglycerides are esters of only two fatty acids, phosphoric acid and a trifunctional alcohol - glycerol (IUPAC name is 1,2,3-propantriol). The fatty acids are attached to the glycerol at the 1 and 2 positions on glycerol through ester bonds.
Phospholipids Phospholipids have a structure like a triglyceride,but contain a phosphate group in place of the third fatty acid. The phosphate group is polar and therefore capable of interacting with water molecules.
STEROIDS Steroids have a backbone of 4 carbon rings. Cholesterol is the precursor of several other steroids, including several hormones. It is also an important component of cell membranes.