BiologyReview5

  1. Selectively Permeable -or- Semi-Permeable (define)
    The cell controls what goes in or out of the cell membrane so that the cell maintains homeostasis.
  2. Endocytosis (define)
    The movement of substances into a cell by use of a vesicle.
  3. Exocytosis (define)
    The movement of a substance out of a cell by use of a vesicle.
  4. T/F Endocytosis and Exocytosis require energy.
    True.
  5. The two types of endocytosis are:
    • Pinocytosis
    • Phagocytosis
  6. Pinocytosis (define)
    • "Cell drinking"
    • The movement of fluids and dissolved solutes into the cell.
  7. Phagocytosis (define)
    • "Cell eating"
    • The movement of a large particle or even whole organisms into the cell.
  8. Osmosis (define)
    The diffusion of water through a selectively permeable membrane.
  9. T/F Osmosis requires energy.
    False.
  10. Diffusion (define)
    Movement of a substance from high concentration to low concentration.
  11. Active Transport
    • Movement against concentration gradient.
    • Requires energy.
  12. Passive Transport
    • Movement with concentration gradent.
    • Does not require energy.
  13. Equilibrium
    A condition where the concentration of a substance is the same throughout a space.
  14. Hypertonic
    • A fluid with higher concentration of substances than the cell.
    • Cell will shrink.
  15. Hypotonic
    • A fluid with lower concentration of substances than the cell.
    • Cell will swell.
  16. Isotonic
    A fluid with the same concentration of substances as the cell.
  17. Facilitated Diffusion
    Substances are moved across a membrane through carrier proteins.
  18. T/F Facilitated diffussion requires energy.
    False.
  19. Carrier Protein
    A protein that carries a substance across the cell membrane.
  20. Solvent (define)
    The substance soing the dissolving.
  21. Solute (define)
    The substance being dissolved.
Author
HannahD
ID
122737
Card Set
BiologyReview5
Description
Biology review
Updated