According to the fluid mosaic model of membrane structure, proteins of the membrane are mostly
A)spread in a continuous layer over the inner and outer surfaces of the membrane.
B)confined to the hydrophobic core of the membrane.
C)embedded in a lipid bilayer.
D)randomly oriented in the membrane, with no fixed inside-outside polarity.
E)free to depart from the fluid membrane and dissolve in the surrounding solution.

Question

Quizplus · Accepted Answer

The fluid mosaic model suggests that proteins are embedded within the lipid bilayer of the membrane. Therefore, choice C is the best answer. Choice A is incorrect because proteins are not spread in a continuous layer over the surfaces of the membrane. Choice B is incorrect because proteins are not confined to the hydrophobic core of the membrane. Choice D is incorrect because proteins do have a fixed inside-outside polarity. Choice E is incorrect because proteins do not typically leave the membrane and dissolve in the surrounding solution.

According to the Fluid Mosaic Model of Membrane Structure, Proteins