Which of the Following Statements Is TRUE of Membrane Phospholipids

Multiple Choice

Which of the following statements is TRUE of membrane phospholipids?

A) The hydrophilic head groups face the interior portion of the membrane.
B) The hydrophobic tail groups face the exterior portion of the membrane.
C) They spontaneously flip-flop from one side of the membrane to the other.
D) They freely move laterally within the membrane.
E) They rarely flip-flop across or move laterally within the membrane.