Question

_____ _____ is the movement of materials across the plasma membrane using channel proteins.

A: Diffusion B: Facilitated Diffusion C: Osmosis D:Active Transport

Answer 1

diffusion

Materials move within the cell 's cytosol by diffusion, and certain materials move through the plasma membrane by diffusion. Diffusion expends no energy. On the contrary, concentration gradients are a form of potential energy, dissipated as the gradient is eliminated.