Question

1. how does the structure of the cell membrane help regulate what enters and leaves a cell? it is solid and does not allow anything to pass through. it is made of a flexible layer that controls the movement of substances in and out. it is a rigid wall that protects the cell from any substances. it creates energy to push substances through the cell. clear all

Explanation:

The cell - membrane is a flexible, semi - permeable layer. It has a lipid bilayer structure with embedded proteins that control the movement of substances in and out of the cell. It is not solid, not a rigid wall like in plant cells (cellulose wall), and does not create energy to push substances through the cell.

Answer:

It is made of a flexible layer that controls the movement of substances in and out.