Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane. Table of Contents: 1) Passive Transport 2) Diffusion 3) Osmosis 4) Channel Proteins 5) Active Transport 6) ATP 7) Transport Proteins 8) Biolography 9) Vesicular Transport 10) Exocytosis 11) Endocytosis 12) Phagocytosis 13) Pinocytosis 14) Receptor-Mediated Endocytosis