Question

A cell membrane is allows some materials through the phospholipid bilayer. Materials that are too large need to be transported through a channel proteins embedded in the membrane. These proteins do not use energy to move these particles into and out of the cell. What is the mechanism being described?

Answer 1

Diffusion

Step-by-step explanation:

Diffusion is the movement of substances from an area of high concentration to an area of low(er) concentration