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Types of Lipids and their functions


 1. Triglyceride,


They are commonest form of lipids in nature.



Triglycerides formed by esterification of one glycerid molecule and three fatty acid molecule. 



Triglyceride are hydrolyzed by lipase enzyme.



Hydrolysis of lipids called saponification .



There are two types of triglycerides,


*1. Saturated triglycerides


*2. Unsaturated triglycerides 



Unsaturated facts can be converted into saturated fact by hydrogenation.



Functions of triglycerides,



*They can use as an energy source and storage food


*Triglycerides are thermal insulators



*Protect internal organs from mechanical shocks and friction 




2. Phosphor lipids   



Phosphor lipids formed by esterification of two fatty acid molecules and phosphoric acid molecule with glycerol molecule



3. Steroids



Steroids are having several rings of carbon.



Cholesterol is the most abundant steroid in human body. 




4. Waxes



Waxes are composed of fatty acids and alcohol which contain lone hydrocarbon chain.




Waxes are extremely hydrophobic  therefore they can act as water proof waxes and waxes can reduce water loss.





5. Spingo lipids 




Spingo lipids are present in plasma membrane.



This compound play important role in single transmission and cell recognition.



6. Glycolipids 




They are composed of lipids and polysacharides 




They can be found in plasma membrane 



7. Lipoprotein




They contain both proteins and lipids .



It allows facts to move through the water,inside and out side of the surface .




They are also present in blood plasma.




Functions of lipids 




*Lipids act as stored food 



*Lipids act as vitamins 



*Lipids act as hormones 



*Lipids act as an electrical insulator 



*Lipids help to reduce the body temperature 



*Protect internal organs from mechanical shocks and friction 

                                                                                                                 Edited by Tashenka Ninel



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