Question

The drawing below illustrates a small portion of the molecules that make up a cell membrane. What is the primary function of the phospholipid in the cell membrane?

a. line up amino acids for protein synthesis
b. prevent the passage of certain molecules into the cell
c. helps cells recognize each other
d. allow glucose molecules into the cell

Answer 1

The correct option is b

Step-by-step explanation:

Phospholipids are lipids that contains a phosphate group, which forms the "head" of the molecule and is hydrophilic (water loving). The "tail" of phospholipids is made of two fatty acids which are hydrophobic (water fearing). The phospholipid in the cell membrane acts as a selectively permeable barrier that regulates what goes in and out of the cell thereby protecting the cell from some external molecules and ions.