Which of these statements about the composition of biological membranes is not correct?
a. the composition of lipids and proteins differs between different species and in different types of cells in a single organism
b. the two leaflets of a membrane bilayer have different lipids and compositions
c. the cell membranes and mitochondrial membranes of vertebrate animals have different lipid compositions.
d. when phosphatidylinositol is on te outer monolayer of the cell membrane bilayer, it marks the cell for destructions.
e. the flip-flop movement of lipids is required to generate the transbilayer asymmetry in lipid composition