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Question

(D) The cell membrane is composed of a lipid bilayer with embedded proteins. Water-soluble substances cannot pass through the hydrophobic lipid bilaye

Vedclass · Accepted Answer

Spanning across the entire membrane.

Vedclass · Answer

(D) The cell membrane is composed of a lipid bilayer with embedded proteins. Water-soluble substances cannot pass through the hydrophobic lipid bilayer directly. To facilitate their transport,integral membrane proteins,also known as transmembrane proteins,span across the entire lipid bilayer. These proteins form channels or pores that provide a pathway for the movement of water-soluble substances,ions,and polar molecules across the membrane. Therefore,these proteins are described as spanning across the entire membrane.

The proteins that provide a pathway for the transport of water-soluble substances across the cell membrane are:

Similar Questions

In the Danielli and Davson model of the plasma membrane,the polar end of the phospholipid molecule is represented by:

$A$: Pumps are proteins that use energy to transport substances.
$R$: Pumps are highly specific like enzymes.

Which is the most widely accepted model to explain the structure of the cell membrane?

How does a gap junction facilitate intercellular communication?

Who proposed the unit membrane concept of the plasma membrane?

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