Tag: glycocalyx

Functions of the cell membrane

Functions of the cell membrane

a. Functions of the lipid of the cell membrane: i. The lipid layer in the middle of the membrane is impermeable to the usual water-soluble substances such as ions, glucose. and urea. sat-soluble substances, such as oxygen, carbon dioxide, alcohol, can penetrate this portion of the membrane with ease, ii. The cholesterol in the cell […]

April 28, 2012 | By | Reply More
The structure of a cell membrane

The structure of a cell membrane

Definition The cell membrane, which envelops the cell, is a thin, pliable, elastic structure. Thickness :7.5 to 10 nanometers. Structure Its basic structure is a lipid bilayer interposed with large globular protein molecules. a Lipid of the cell membrane : Composed almost entirely of phospholipids and cholesterol (lipid in nature). Hydrophilic : The phosphate radicle […]

April 28, 2012 | By | Reply More
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