Q: List three factors that affect the movement of materials across the plasma membrane.

Flexi Says: Factors affecting transport of materials across plasma membrane are: concentration difference across the membrane (larger the concentration difference faster is the diffusion); size of material that needs to be moved (large sized particles need a carrier or transport protein); charge on the substance (charged particles need a carrier as they can not move across membrane on their own); increased surface area of the membrane increases the rate of diffusion; higher temperatures also increase the rate of diffusion