Question

multiple choice question
which describes the two layers of phospholipids arranged tail-to-tail that make up the plasma membrane of a cell?

• phospholipid bilayer
• cholesterol bilayer
• protein bilayer
• carbohydrate bilayer

Explanation:

The plasma membrane of a cell is made up of two layers of phospholipids arranged tail - to - tail. Cholesterol is a component in the membrane but not the main bilayer - forming molecule. Proteins are embedded or associated with the membrane but do not form the bilayer. Carbohydrates are also associated with the membrane but not the bilayer - forming structure. So the two - layer arrangement of phospholipids is called a phospholipid bilayer.

Answer:

A. Phospholipid bilayer