Deep-sea fishes adapted to survive in high pressure because they have
(A) Adipose tissue under skin
(B) Unsaturated fatty acids in their blood
(C) Glycerol in their body fluids
(D) Unsaturated fatty acids in their membranes

Why do the arctic and antarctic fishes have abundant unsaturated fatty acids ?

(a) which disaccharide is the major sugar of insect haemolymph. (b) Give atleast two examples of unsaturated fatty acids. ( c) Differentiate between saturated and unsaturated fatty acids (atleast 3 differences).

Fats are broken down into glycerol and fatty acids with a series of chemical reactions occurring in the digestive tract. The fatty acids are then absorbed through the small intestine and enter lacteals. The excess of such fatty acids gets converted into fats and are stored in the adipose tissue present in the subcutaneous layer. Under starvation, the fatty acids are mobilized to be used as energy during cellular respiration. These fatty acids during cellular respiration are first broken down into