Which statement about membrane phospholipids is not true?
A) They associate to form bilayers.
B) They have hydrophobic "tails."
C) They have hydrophilic "heads."
D) They give the membrane fluidity.
E) They flip-flop readily from one side of the membrane to the other.

Question

Quizplus · Accepted Answer

Membrane phospholipids do not readily flip-flop from one side of the membrane to the other. This is because the hydrophobic tails are not soluble in the aqueous environment, so it is energetically unfavorable for them to cross the hydrophilic head regions. Instead, phospholipids can move laterally within the same monolayer, or they can be flipped from one monolayer to the other with the help of specific membrane transport proteins.

Which Statement About Membrane Phospholipids Is Not True