1. Transport of Molecules

2. concentration Where is there a higher concentration of yellow dots? AB

3. Tendency for molecules to move from an area of high concentration to an area of low concentration. AB DIFFUSION

4. Transport of Molecules WHAT IS HAPPENING - EXPLAIN THIS TO THE PERSON SITTING NEXT TO YOU…

5. Tendency for molecules to move from an area of high concentration to an area of low concentration. DIFFUSION

6. membranes act as filters. DIFFUSION through a semi-permeable membrane

7. SOLUTE SOLUTE SOLVENT SOLVENT DIFFUSION through a semi-permeable membrane particle that dissolves substance in which another substance is dissolved

8. Tendency for an area of high concentration an area of low concentration to move from an area of high concentration to a an area of low concentration solution DIFFUSION through a semipermeable membrane molecules

9. IODINE + STARCH -> PURPLE

10. Tendency for hypertonic hypotonic to move from hypertonic solution to a hypotonic solution DIFFUSION through a semipermeable membrane molecules

11. Hypertonic = HIGH solute concentration compared to “X” side Hypotonic = low solute concentration compared to “X” side

12. outside

13. WE HAVE BEEN MOVING SOLUTE MOLECULES….. What is next? Moving the SOLVENT

14. Tendency for ??? ??? to move from ??? solution to a ??? solution OSMOSIS through a semipermeable membrane WATER

15. hypotonic hypertonic Tendency for WATER MOLECULES to move from hypotonic solution to a hypertonic solution osmosis

16. DIFFUSION OSMOSIS

18. passive transport think of passive transport like going down a slide…

19. think of facilitated diffusion like going down a slide… with help of proteins going from HIGH to low requires no energy… It just goes!

21. Still PASSIVE…. What is different?

22. think of DIFFUSION like going down a slide… Going from HIGH to low requires no energy…

23. What happens in plant cells? OSMOSIS???

24. What happens in plant cells? Remember, they have a CELL WALL

25. What happens in plant cells? the pressure of the cell contents against the cell wall, in plant cells, determined by the water content of the vacuole

26. What happens in plant cells? the pressure of the cell contents against the cell wall, in plant cells, determined by the water content of the vacuole

27. Osmosis in cells w/ walls Isotonic is not good enough!

28. TURGID vs. FLACID

29. with salt w/ distilled H 2 O CELL WALL CELL MEMBRAN E

30. ISOTONIC HY Red Blood Cells pertonic inside the cell potonic inside the cell

31. Are these words dealing with the CELL…. Or the SOLUTION outside the cell?

33. NOT PASSIVE!!

35. Endocytosis Endocytosis {Endo (within) cytosis (cell) } is a process in which a substance gains entry into a cell without passing through the cell membrane. This process is subdivided into three different types:

36. Active Transport = [low] to [high] ATP

37. think of active transport like going up a slide…

38. going from low to HIGH requires a lot of energy…

39. think of active transport like going up a slide… going from low to HIGH requires a lot of energy…

40. phagocytosis

41. Phagocytosis- cell eating

42. pinocytosis- cell drinking

43. exocytosis- cell vomiting