Question

What are the membranes made up of????

Answer 1

the cell memberane is made up of-

Lipids - 40 percent ( Phodpholipids, cholestrol, glycolipids)

Proteins - 58 - 59 percent

Carbohydrates - 1 - 2 percent..

Hope it will help u...

Answer 2

cell membrane is made up of lipid bilayer(phospholipid like lecithin), proteins , sugars and cholesterol.
lipid -40%
protein -50%
the membrane is quasi fluid and the famous fluid mosaic model explaining membrane str. was given by singer and nicolson 
HOPE IT HELPS