Question

The cell membrane is made up of _____.

a double layer of cellulose
a single layer of cellulose
a double layer of protein
a double layer of phospholipids

Answer 1

It consists of a layer of phospholipids and protein. But is mostly referred to as the phospholipids layer. The answer is; a double layer of phospholipids.
Hope that helped. Have a nice day

Answer 2

The right option is; a double layer of phospholipids

The cell membrane is made up of a double layer of phospholipids.

The cell membrane is a biological membrane that surrounds a cell and separates the contents of the cell from its outside environment. The cell membrane is composed of a double layer of lipids with embedded proteins. The cell membrane protects the cell, gives the cell its structure, and controls the movement of substances in and out of the cell.