Question

Which of the following help in cell-cell interactions?

• A. Glycolipids
• B. Phospholipids
• C. sphingolipids
• D. Cholesterol

Answer 1

The correct option is A Glycolipids

Compound lipids are esters of fatty acids with alcohol (mostly glycerol) along with a few additional groups as well (phosphorus, sugars, proteins).

Compound lipids can be further subdivided into glycolipids, phospholipids and sphingolipids on the basis of the additional group that has been attached.

Glycolipids are made up of fatty acids, glycerol and carbohydrates. They are found on the cell surface and help in cell- cell recognition. Galactocerebrosidase is a glycolipid found in the white matter of the brain.

Phospholipids are made up of fatty acids, glycerol and phosphate groups. They are the major components of cell membrane (phospholipid bilayer). Lecithin is a phospholipid made up of choline, phosphate, glycerol and fatty acids.

Sphingolipids contain sphingosine as the additional groups. They are found in the plasma membrane of animal cells (especially nerve cells).