What accounts for the fluidity that defines the fluid mosaic model of a typical plasma membrane?
A) The proteins, being large, cause the membrane to jiggle around.
B) The phospholipids collectively form a jellylike substance similar to the cytoplasm.
C) The phospholipids are not bonded to each other and thus are freer to move around.
D) Water molecules infiltrate the bilayer causing it to become more watery and thus more fluid.
E) The phospholipids in a typical plasma membrane form covalent bonds, which are elastic and allow the membrane to stretch.

Question

Quizplus · Accepted Answer

The fluid mosaic model describes the plasma membrane as a flexible layer made of lipid molecules, including phospholipids, which are not covalently bonded to each other. This lack of strong bonds allows them to move freely and gives the membrane its fluid characteristic.

What Accounts for the Fluidity That Defines the Fluid Mosaic