About

Sometimes you really do get something for nothing. In this BrainPOP movie, Tim and Moby teach you about passive transport and how cells get everything they need from their environment. Find out the difference between passive and active transport, plus how cells get oxygen, water, nutrients, and whatever else they may need to function. You’ll learn how cells have special membranes that use pores and diffusion to allow certain things to pass through with no effort from the cell, in addition to how diffusion works to help cells get rid of substances too. Who knew cells had a guest list?