- PHOSPHOLIPIDS
Phosphoric acid react to one of the 3 hydroxyl group of glycerol living the two other to react with fatty acids.
- Phospholipids in leaving cells constitute the main major constituted of the cell membrane
- Phospholipids serves as a source of acetylechlorine (a new transmitter)
- It functions with transport of vit from the gud to the liver in mammary digestion
- WAXES
These are ester of fatty acids formed with complex aleohots other than glycerol. They are use as water proofing materials by both plants and animals. Blaxes occur in the cuticles of the epidermis of leaves and stems, in animals the occur in the skins and feathers. Waxes is also found in the honey comb e.g: chitin and suberin.
- STEROIDS
They consist of complex rings or cyclic compound of carbon atoms. Hence they are considered as cyclic lipids, an example in animal include cholesterol from cholesterol the fifth compound are synthesized; sex hormones (oestrogen, and testosterone), hormones of the adrenal cortex (adrenaline) and vitamins.
- TERPENES
They are also made up of rings of carbon atoms, e.g.: phytol, or a compound of chorophyl, vitamin A, E and K most often, terpenes gives scent and flavor in essential oil.
- LIPOPROTEINS
These are the combination of proteins and lipids found in the blood plasma and leaves. Lipids are transported in this form, they also form membrane structure.
- GLYCOLIPIDS
These are combination of lipids and carbohydrates with the carbohydrates forming the polar head of the molecule. They are also membrane structures e.g.: myelin.
