4) movement of materials across the cell membrane using energy is called whereas the movement of materials across the cell membrane without using energy is a) active transport; passive transport b) passive transport; active transport 5) during passive transport, materials move from high concentration of material on one side of the membrane to low concentration of materials on the other side of the membrane. this difference in concentration of a material across the membrane is called the a) concentration deviation b) concentration transition c) concentration gradient 6) the two types of active transport that uses vesicles to move large particles across the membrane are which moves material into the cell, and which moves material out of the cell. a) sodium potassium pump; osmosis b) endocytosis; exocytosis c) exocytosis; facilitated diffusion 7) which process is the movement of water across the cell membrane? a) diffusion b) osmosis c) hydrocytosis