According to the fluid mosaic model of cell membranes, which of the following is a true statement about membrane phospholipids?

a. They can move laterally along the plane of the membrane.
b. They frequently flip-flop from one side of the membrane to the other.
c. They are free to depart from the membrane and dissolve in the surrounding solution.
d. They have hydrophilic tails in the interior of the membrane
e. They occur in an uninterrupted bilayer, with membrane proteins restricted to the surface of the membrane.

According to the fluid mosaic model of cell membranes, the statement that says "They can move laterally along the plane of the membrane" about membrane phospholipids is true.

Jonathan Singer and Garth Nicolson's (1972) model explains most of the physical and thermodynamic properties of the membrane due to its dynamic configuration. This model is called the “Fluid Mosaic Model”.

In this model it is proposed that the membrane is like a fluid mosaic in which the lipid bilayer is the base or support and the proteins are incorporated or associated with it.

Said proteins interact with each other and with lipids, both proteins and lipids can move laterally, this being the most frequent movement, that is, the molecules diffuse laterally within the same layer.

Therefore, we can conclude that the fluid mosaic model describes the behavior of the membrane, where lipids experience a large number of displacements, the most frequent being movement laterally along the plane of the membrane.

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