what is the usual distance across the plasma membrane?

what is the main role of the plasma membrane?

why is a phospholipid bilayer called a bilayer?

the plasma membrane consists mainly of what?

what is the role of the phospholipids?

role of extrinsic proteins

role of intrinsic proteins

role of glycolipids

role of glycoproteins

role of cholesterol

why is it called fluid mosaic model?