Question 40
which is not considered to be a function of lipids in the human body?
motion
e signaling
cell structure
insulation

The correct answer is motion.

Explanation:

Lipids are the important constituents of plasma membrane. For example phospholipid,glycolipid,splingolipid,cholesterol builds most of the structural framework of the cell membrane.

Lipids plays an important role during cell signaling For example the phosphotidy inositol 4,5 bisphosphate one of important component of  the inner leaflet of the the plasma membrane undergo hydrolysis to form Diacylglycerol(DAG) and inositol triphosphate(IP3).Both IP3 and DAG act as second messenger.

Lipid act as an insulator of myelein sheath that helps in the saltatory conduction of nerve impulse across the axon of unmyelinated nerve fibre.

 Lipid does not involve in motion