Cells: 1.4

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Across
  1. 3. Proteins within the cell pick up specific molecules and move them across the cell membrane using cellular energy.
  2. 5. movement of materials across a cell membrane without using cellular energy.
  3. 7. molecules moving from high concentration to low concentration.
  4. 8. The movement of water molecules across a selectively permeable membrane.
  5. 9. The movement of materials across a cell membrane using cellular energy.
Down
  1. 1. When proteins in the cell membrane form channels through which sugars to diffuse.
  2. 2. When a vacuole forms around a particle and the cell membrane opens allowing large particles to leave.
  3. 4. When the cell membrane changes shape and engulfs the particle it needs.
  4. 6. substances can or cannot cross cell membrane.