Which of the following statements are correct? Explain your answers.

A. Lipids in a lipid bilayer spin rapidly around their long axis.
B. Lipids in a lipid bilayer rapidly exchange positions with one another in their own monolayer.
C. Lipids in a lipid bilayer do not flip-flop readily from one lipid monolayer to the other.

D. Hydrogen bonds that form between lipid head groups and water molecules are continually broken and re-formed.

E. Glycolipids move between different membrane enclosed compartments during their synthesis but remain restricted to one side of the lipid bilayer.

F. Margarine contains more saturated lipids than the vegetable oil from which it is made. 

G. Some membrane proteins are enzymes. 

H. The sugar layer that surrounds all cells makes cells more slippery.