In order for an organism to stay alive and function, its cells must be able to exchange certain materials with their environment. That means that within an organism's body, various molecules and compounds move into, and out of, all cells. This program explores the ways in which every individual cell, in both eukaryotes and prokaryotes, controls which materials pass in and out by the action of its selectively permeable cell membrane.

Originally released by Video Education America (VEA), 2017. Streaming video file encoded with permission for digital streaming by Infobase on August 30, 2018.

Cell Membranes and Simple Transport (8:04); .