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Across 6. The movement of substances across a cell membrane without the use of cellular energy; from high to low; 3 types (2 Words) 8. A process where, using energy, a cell engulfs materials with a portion of its cell membrane and brings the contents inside of the cell (type of active transport) 9. The movement of molecules from an area of high concentration to and area of low concentration (type of passive transport) 10. A type of passive transport used for substances thatcannot readily diffuse through cell membranes but are aided through by carrier (transport) proteins; does not require the use of energy. (2 Words)

Down 1. The difference in the concentration of a substance from one location to another (2 Words) 2. A process by which the contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane. (type of active transport) 3. The movement of materials through a cell membrane using energy. (2 Words) 4. The ability of a cell or organism to maintain a stable internal state in a changing environment 5. A type of diffusion involving the movement of water across a membrane (type of passive transport) 7. Occurs when the concentration of molecules is equal throughout a space