Question

Simple diffusion occurs because(1 point)
Responses

molecules constantly move and collide with each other.
molecules constantly move and collide with each other.

cellular energy forces molecules to collide with each other.
cellular energy forces molecules to collide with each other.

molecules are attracted to one another.
molecules are attracted to one another.

cellular energy pumps molecules across the cell membrane.

Answer 1

molecules constantly move and collide with each other.