SHARE
TWEET

Untitled

a guest Nov 14th, 2017 54 Never
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
  1. CELL PROCESSES: OSMOSIS & DIFFUSION
  2.  
  3. Cell Membrane-
  4. Semi-permeable- ability to selectively let substances in and out.
  5. selectively let substances in and out
  6.       2. Cell membrane let in smaller molecules like water, oxygen, and carbon dioxide.
  7.       3. Cell membranes are not permeable to salts, sugars, and other large molecules.
  8.       4. Substances move into and out of a cell by Active  or Passive transport
  9.       Factors that way limit or enhance movement of molecules.
  10.  
  11. HEAT
  12. CONCENTRATION GRADIENT
  13. PRESSURE
  14. MOLECULE WEIGHT
  15.  
  16. 2. Diffusion
  17. Form of PASSIVE transport by which molecules move in and out of a cell without using energy.
  18.  
  19. 3. OSMOSIS Form of Passive transport by with water molecules move in an out of a cell without using energy
  20.  
  21. Molecules of a substance move from aras f HIGH concentration to LOW concentration
  22. ****OVER TIME THE CONCENTRATION OF ALL MOLECULES EVEN OUT BOTH SIDES OF THE CELL MEMBRANE****
  23. (Equilibrium/homeostasis)
  24.  
  25.  
  26. HOW DOES DIFFUSION OCCUR?
  27.  
  28. Molecules are constantly in motion, bumping into each other.
  29. More molecules= more collisions
  30. Collisions cause more molecules to spread away from each other.
  31. Overtime, all molecules will spread out evenly.
  32.  
  33. Plasmolysis- when a cell LOSES water
  34.  
  35. Turgor- When a cell GAINS water.
  36.  
  37. Hypertonic- a hypertonic solution is one where the concentration of closures is greater outside the cell than inside it.
  38.  
  39. HYPOTONIC- A hypotonic solution is one in which the concentration of solutes is greater inside the cell than the outside of it.
  40.  
  41. ISOTONIC- A solution inside the cell and outside the cell the is equal concentration.
RAW Paste Data
Top