Question

question 1
the cell membrane is made mainly of:
phospholipids
peripheral proteins
integral proteins
cholesterol

Explanation:

The cell - membrane is a phospholipid bilayer. Phospholipids are the main component that forms the basic structure of the cell membrane. Peripheral and integral proteins are embedded or associated with the membrane but are not the main component. Cholesterol is also present in the membrane but in smaller amounts compared to phospholipids.

Answer:

phospholipids