Answered: Why is the current model of Plasma…

Why is the current model of Plasma membrane known as the “Fluid Mosaic Model”? What is the fluid, and in what sense is it fluid? What makes up the mosaic

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter3: Cell Structure And Function

Section: Chapter Questions

Problem 18CTQ: Why is it advantageous for the cell membrane to be fluid in nature?

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Concept explainers

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.

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Why is the current model of Plasma membrane known as the “Fluid Mosaic Model”? What
is the fluid, and in what sense is it fluid? What makes up the mosaic?

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Similar questions

In the fluid mosaic model: plasma membrane proteins orient their hydrophilic sides toward the internal bilayer. phospholipids often flip-flop between the inner and outer layers. the mosaic refers to proteins attached to the underlying cytoskeleton. the fluid refers to the phospholipid bilayer. the mosaic refers to the symmetry of the internal membrane proteins and sterols.
What type of plasma membrane protein provides the means for moving materials across the plasma membrane? What are three subtypes?
Describe the various types of specialized domains that can be established in the plasma membrane? what is the general consequence of these domains (ie why form them )?
The rigidity of the plasma membrane is an essential characteristic that allows for cells to survive and thrive in various environments. What are examples of conditions or molecules that can alter plasma membrane rigidity?
What is the plasma membrane made of? How does this affect the movement of lipid-soluble and non-lipids through the cell?
Why is the structure of the plasma membrane considered to be a fluid-mosaic model?
What are the main structural components of the plasma membrane according to the fluid mosaic model?
What happens if plasma membrane fails to maintain optimal fluidity?
Differentiate between unit membrane model and fluid mosaic model of plasma membrane structure?
What molecule should cells insert their cell membrane to ensure membrane fluidity?
. what are two structural characteristics of cell membrane determine whether substances can pass through them passively? What determines whether or not a substance can be actively transported through the membrane?
Why do most molecules require the assistance of proteins to cross the cellular membrane? What factors limit diffusion of molecules across the cellular membrane?