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Across 1. movement of molecules from higher to lower concentration 6. concetration inside and outside cell is the same 9. Movement of molecules through membrane with out help of ATP or Protein 12. Moves protons (H) across membrane 13. requires ATP and uses vesicles to release substances outside

Down 2. . membrane is a "mosaic" of proteins and phospholipids that are constantly moving and changing 3. Movement of water across cell membrane 4. Grabs molecule, change shape, slip to other side 5. Molecules with both hydrophilic and hydrophobic regions 7. concentration outside cell is less than inside the cell 8. Cell drinking 10. Transport water into and out the cell 11. concentration outside cell is greater than inside the cell