Cell crossword

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Across
  1. 3. Low to high
  2. 5. Energy needed
  3. 8. Equilibrium
  4. 11. High concentration outside
  5. 12. Liquid cell membrane
  6. 13. Select few through
  7. 14. Low concentration outside
  8. 15. Through channel proteins
Down
  1. 1. No energy
  2. 2. Water-loving heads
  3. 4. Flexible wall
  4. 6. High to low
  5. 7. Double layer
  6. 9. Stabilizer
  7. 10. Larger molecules through