Which one of the following statements about biological membranes is INCORRECT?
1
Lipid molecules can diffuse freely in the plane of the bilayer.
2
The ratio of the size of head group to fatty acyl chain of phospholipids contributes to the curvature properties of lipid membranes.
3
Individual lipid molecules rapidly rotate along their long axis.
4
Phospholipids freely diffuse from one leaflet of bilayer to another.