Which of the following describes the cell membrane?

Question

Responses

It is a double layer of phospholipids.
It is a double layer of phospholipids.

It is a single layer of carbo-lipids.
It is a single layer of carbo-lipids.

It is made up of purely cholesterol, which means cholesterol is a healthy dietary molecule.
It is made up of purely cholesterol, which means cholesterol is a healthy dietary molecule.

It is made up of purely proteins, and most of them are arranged in a trilayer.

Answer 1

The correct description of the cell membrane is:

It is a double layer of phospholipids.

The cell membrane, also known as the plasma membrane, is primarily composed of a phospholipid bilayer, which means it has two layers of phospholipids. This bilayer structure is crucial for the membrane's function in protecting the cell and regulating the movement of substances in and out of the cell. The other options provided are incorrect.