8.3 and 8.4: Cell Membrane and Transport

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Across
  1. 4. A lipid in the cell membrane that keeps it fluid.
  2. 6. Water channel protein that allow water to pass directly through them and into/out of the cell.
  3. 7. When molecules move from low to high concentration using energy.
  4. 12. When a solution has a higher solute concentration compared to the cell. This will cause water to rush out of the cell.
  5. 13. When the solute concentration in the cell and out of the cell is equal, causing water to constantly move in and out of the cell to maintain equality.
  6. 15. Process by which a cell releases a large amount of material through the membrane.
  7. 16. Process of taking material into the cell by means of inward folding of the cell membrane.
  8. 18. The movement of water molecules that affect a cells health (i.e., shrink, swell)
  9. 19. A property of cell membranes that allows certain substances to pass through, but others cannot.
Down
  1. 1. When a solution has a lower solute concentration compared to the cell. This will cause water to rush into the cell.
  2. 2. The movement of particles from high to low concentration using a protein channel. Molecules that move by this method of transport are larger and have a charge.
  3. 3. A stable internal environment maintained by an organism.
  4. 5. When particles/molecules are equal on both sides of the cell membrane.
  5. 8. Makes up the cell membrane and has a hydrophilic head and hydrophobic tails.
  6. 9. Model of the cell membrane that explains how the cell membrane is fluid and can change shape.
  7. 10. A protein channel that carries ions (charged molecules) across the cell membrane.
  8. 11. The process by which particles move from an area of high concentration to low concentration.
  9. 14. The outer boundary of the cell that controls what goes in and out. It is made of phospholipid molecules.
  10. 17. Water molecules moving from high to low concentration across a membrane.