Question

Which type of molecule forms the cell membrane?

Answer 1

Phospholipids

Explanation:

The cell membrane is formed of several different types of molecules.

The cell membrane is mainly made up of phospholipid molecules.

More on them here:
https://socratic.org/questions/what-is-a-phospholipid?source=search

and here:
https://socratic.org/questions/what-is-the-function-of-phospholipids-in-the-cell-membrane?source=search

https://socratic.org/questions/what-type-of-molecule-forms-a-lipid-bilayer-within-a-cell-membrane

They are arranged in a bilayer, in which are scattered several types of protein molecules in addition to cholesterol.

The following image describes the structure of the cell membrane where only a small portion of it is shown as a sample. This model for the structure of the cell membrane is called the fluid mosaic model.