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(D) According to the fluid mosaic model,the quasi-fluid nature of lipids enables lateral movement of proteins within the bilayer. Lipid molecules are

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Proteins are useful in simple diffusion.

Vedclass · Answer

(D) According to the fluid mosaic model,the quasi-fluid nature of lipids enables lateral movement of proteins within the bilayer. Lipid molecules are amphipathic,meaning they have both hydrophilic (polar head) and hydrophobic (non-polar tail) regions. Facilitated transport requires specific membrane proteins (carrier proteins or channels) to move molecules across the membrane. Simple diffusion is the movement of molecules directly across the lipid bilayer without the assistance of membrane proteins. Therefore,the statement that proteins are useful in simple diffusion is incorrect.

Select the incorrect option from the following regarding the cell membrane.

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