1.

What are lipids ? What is their role in our body ?

Answer» (i) The substance formed by specific chemical bond between fatty acids and alcohol are called as lipids.
(ii) Digestion of lipids is their conversation into fatty acids and alcohol.
(iii) Fatty acids are absorbed and distributed everywhere within the body.
(iv) From these fatty acids, different cells produce various substances necessary to themselves.
(v0 For examples , phospholipids which are essential for producing plasma membrane are formed from fatty acids.
(vi) Fatty acid are also used for producing hormones like progesternone , estrogen , testosterone, aldosterone etc and the covering around axons of nerve cells.
(vii) We get 9 Kcal of energy per gram of lipids.
(viii) Excess of lipids are stored in adipose connective tissue in the body.


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