Which one of the following features is incorrect, with respect to fluid mosaic model of plasma membrane?

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Membrane bears non-polar hydrophobic tails of phospholipids pointed outwards.

Phospholipid molecules provide fluidity.

Intrinsic proteins constitute a major part of the total proteins.

Proteins provide mosaicness to the membrane.

answer is A.

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Detailed Solution

Lipids are organised in a bilayer, with hydrophobic tails pointing inward, and hydrophilic polar heads facing outward.
A fluid mosaic model was put up to describe the plasma membrane's structure. Singer and Nicolson proposed this concept. The phospholipids are positioned in a bilayer according to this paradigm, with their hydrophilic heads facing outward, and their hydrophobic tails facing inward. The bilayer contains proteins that are embedded. Certain chemicals can pass through the plasma membrane on either side, making it a selectively permeable membrane.