Quizlet Mr R Biology Lesson3

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  1. active transport: Movement of substance across the cell membrane that requires energy
  2. concentration gradient: the difference in concentration tha makes osmosis possible
  3. diffusion: a way that cells take in nutrients by thee movement of particles from an area of higher concentration to an area of lower concentration
  4. endocytosis: the process by which substances are transported into the cell by the movement of the cell membrane
  5. equilibrium: when concentrations are equal on either side ot fhe cell membrane
  6. exocytosis: he process by which substances are transported out of the cell by vacuole
  7. facilitated diffusion: when a few molecules can pass through the cell membrane easier than expected
  8. homeostasis: the ability of a cell to regulate its internal condition despite changes to the envronment
  9. hypertonic: solution that the concentration of the solute is higher outside the cell than inside the cell
  10. hypotonic: a solution in which the concentraion of the solute is greater inside the cell than outside the cell
  11. lipid bilayer: two layers of lipids that make up the cell membrane
  12. metabolism: the sum total of the body's chemical activities
  13. osmosis: the movement of waterin a cell from an area of higher concentration to an area of lower concentration
  14. passive transport: the movement of materials inot or out of the cell without the expenditure of energy
  15. semi-permeable membranes: membranes that will allow some particles to pass through and not allow others
  16. solute: the substance that dissolves in a solvent
  17. solution: a substance that has a solute dissovled in a solvent
  18. solvent: the substance that dissovles the solute (in the cell it is water)