Question

which of the following molecules is a structural component of the plasma membrane? options: proteoglycan, phospholipid, glycoprotein, lipoprotein

Explanation:

The plasma membrane's basic structural framework is the phospholipid bilayer. Phospholipids have a hydrophilic head and hydrophobic tails, which spontaneously arrange into a bilayer to form the membrane structure. Proteoglycans, glycoproteins, and lipoproteins have other roles (e.g., cell - cell recognition, lipid transport) but are not the primary structural component of the plasma membrane like phospholipids.

Answer:

B. Phospholipid