DO NOW Name the three particles in an atom and their associated charges? Where is the majority of the mass of an atom? Which particles compose this mass? Describe the difference between an ionic and a covalent bond?

Cell Transport Passive Transport: movement of materials across the membrane without the use of energy Active Transport movement of materials across the membrane with the use of energy

Cell Transport Passive Transport: Diffusion: movement of high concentration to low concentration Facilitated Diffusion: movement of high concentration to low concentration using protein channels Osmosis: the movement of water across a selectively permeable membrane

Cell Transport Active Transport: Protein Pumps: chemical energy uses “pumps” to move ions across the membrane Endocytosis: moves particle into the cell Exocytosis: moves particle out the cell