Which of the following regarding the fluid mosaic model is NOT true:Group of answer choicesdescribes the plasma membrane as a two-dimensional fluiddescribes a membrane made of different components including proteins and lipidsdescribes a membrane that allows lateral movement of components including proteinsdescribes a rigid plasma membrane made of lipid bilayer
Question
Which of the following regarding the fluid mosaic model is NOT true:Group of answer choicesdescribes the plasma membrane as a two-dimensional fluiddescribes a membrane made of different components including proteins and lipidsdescribes a membrane that allows lateral movement of components including proteinsdescribes a rigid plasma membrane made of lipid bilayer
Solution
The statement that is NOT true regarding the fluid mosaic model is: "describes a rigid plasma membrane made of lipid bilayer".
The fluid mosaic model describes the plasma membrane as a flexible structure that can move and shift, not a rigid one. The term 'fluid' is used because of the parts of the membrane move around. 'Mosaic' is used because of the variety of substances like proteins and lipids that float in the fluid of the membrane, much like tiles of a mosaic.
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The plasma membrane is considered a fluid mosaic model with some stability provided by which of the following components?Try againCholesterolTry againTry again
Fluid mosaic model of the plasma membrane was described byJohannes PurkinjeGeorge Emil PaladeCarl BendaSinger and Nicholson
An improved model of the structure of cell membrane was proposedby Singer and Nicolson (1972) widely accepted as fluid mosaic model(Figure 8.4). According to this, the quasi-fluid nature of lipid enableslateral movement of proteins within the overall bilayer. This ability to movewithin the membrane is measured as its fluidity.
Which component of the plasma membrane has an important impact on the fluidity of the membrane?
The cell membrane is composed of Question 2
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