Question

The major class of lipids found in mammalian cell membranes are

a) Phosphoglycerides
b) Sphingolipids
c) Cholesterol
d) Glycolipids
e) Triacylglycerides

Answer 1

a) Phosphoglycerides

Step-by-step explanation:

Cell membranes have some structures in common, such as the phospholipid double layer that acts by preventing the entry of polar molecules and ions. There are several lipids that can be part of this membrane structure. In us mammals we have the phosphoglycerides (mostly), galactolipids, sulfolipids and sphingolipids.

Glycerophospholipids, also called phosphoglycerides, are phospholipids derived from the phosphatidic acid precursor compound. They are membrane lipids, composed of two fatty acids attached to the first and second carbon of glycerol by an ester bond and the well polar group is bonded by a phosphodiester bond to the third carbon. Since the fatty acids that compose it can be of any type, the same phospholipid can have different molecules.