Question 2

(Multiple Choice)

Phospholipids are large organic molecules with a hydrophilic,polar phosphate head connected to hydrophobic,nonpolar fatty acid tails.These molecules arrange themselves to form a mostly impermeable barrier between a liposome and its environment by lining up


A) hydrophilic head to hydrophilic head with the tails all facing outward from the center line of the membrane.
B) hydrophobic tails facing each other at the center line of the membrane with the hydrophilic heads facing outward, away from the center line of the membrane.
C) hydrophobic tails facing hydrophilic heads.
D) hydrophilic tails facing hydrophobic heads with every other tail facing outward from the center line of the membrane.

Answer

B