Cellular Environment, Membranes, and Transport

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Across
  1. 3. endocytosis Endocytosis involving specific receptors to bring substances into the cell.
  2. 4. potential The voltage difference across the plasma membrane.
  3. 5. A form of endocytosis where cells take in fluids and dissolved solutes.
  4. 8. A form of endocytosis where cells engulf large particles or debris.
  5. 9. A solution with a lower concentration of solutes than the cell.
  6. 12. proteins Proteins attached to the surface of the plasma membrane.
  7. 14. A solution with a higher concentration of solutes than the cell.
  8. 15. Movement of molecules from high to low concentration.
  9. 17. diffusion Diffusion of molecules directly through the plasma membrane.
  10. 19. fluid (ICF) The fluid inside the cell.
  11. 20. The ability of a solution to affect the shape or tone of cells.
  12. 21. The process of bringing substances into the cell using vesicles.
  13. 26. pump A protein that pumps sodium out and potassium into the cell using ATP.
  14. 28. transport processes Transport that does not require energy.
  15. 30. gradient The difference in concentration of a substance across a space.
  16. 31. metabolism All chemical reactions occurring within a cell.
Down
  1. 1. active transport Transport powered by the movement of another substance down its gradient.
  2. 2. active transport Transport that directly uses ATP to move substances across the membrane.
  3. 3. membrane potential The baseline electrical charge difference across the membrane.
  4. 6. A solution with the same concentration of solutes as the cell.
  5. 7. diffusion Diffusion through a membrane via transport proteins.
  6. 10. membrane The outer boundary of the cell that separates its contents from the environment.
  7. 11. The fluid portion of the cytoplasm.
  8. 12. bilayer A double layer of phospholipids forming the basis of the plasma membrane.
  9. 13. permeable A membrane that allows certain substances to pass while restricting others.
  10. 16. mosaic model The model describing the plasma membrane as a dynamic, flexible structure.
  11. 18. The process of expelling substances from the cell using vesicles.
  12. 22. The cellular material between the plasma membrane and the nucleus.
  13. 23. The movement of water across a selectively permeable membrane.
  14. 24. proteins Proteins embedded within the plasma membrane.
  15. 25. fluid (ECF) The fluid outside the cell.
  16. 27. transport The movement of large molecules or fluids using vesicles.
  17. 29. transport processes Transport that requires energy (ATP).