1. What will happen to the drop of dye?

2. Diffusion

3. Diffusion –
movement of a substance from a high to a low concentration without the usage of energy

4. Diffusion is one type of PASSIVE transport - no energy is used by the cell to move things across the membrane.

5. Osmosis
the diffusion of water across a semipermeable membrane from an area of high concentration or water to an area of low concentration of water

8. What would happen to this red blood cell if it is placed in a salt solution?

9. 90% water
salt solution
70% water
Water leaves the cell

11. What would happen to this red blood cell if it is placed in distilled water?
Water enters the cell

12. What would eventually happen to this red blood cell if water keeps entering?
Water enters the cell

13. BOOM!!!

14. Isotonic solution – a solution that contains the same concentration of
dissolved substances as a living
cell placed in it
Hypertonic solution
a solution that contains a higher
concentration of dissolved substances than
a living cell placed in it…
Hypotonic solution
a solution that contains a lower
concentration of dissolved substances…

15. hypotonic hypertonic isotonic
Human cells are placed in three solutions.
Which solution is: Hypertonic? Isotonic? Hypotonic?
1. The concentration of dissolved particles are lower outside the cell than inside the cell
hypotonic
2. The concentration of dissolved particles are higher outside the cell than inside the cell
hypertonic
3. The concentration of dissolved particles are the same outside the cell than inside the cell
isotonic

16. Isotonic, Hypertonic, Hypotonic
Label the diagrams above with the appropriate term refering to the outside solution that the cell is placed in:
Isotonic, Hypertonic, Hypotonic

17. Is the environment of the cell isotonic, hypotonic, or hypertonic?

18. Hypertonic solution

19. Hypotonic solution

20. Hypotonic
Isotonic
Hypertonic

21. Is the environment of the cell isotonic, hypotonic, or hypertonic?

22. What can pass through the cell membrane?
Small particles like glucose can pass freely through diffusion.

25. High concentration
of molecules
Low concentration
of molecules

26.
Spanish! Start at 1:47

28. 1 2 3

29. What would happen to this red blood cell if it is placed in distilled water?
Water enters the cell

30. What would eventually happen to this red blood cell if water keeps entering?
Water enters the cell

31. BOOM!!!

32. Where will the water move? (into or out of the cell)
What might happen
to this cell?
90 % water
100 % water

34. What processes are occuring at arrows A and B?
90 % water B
Active transport A
osmosis
100 % water

35. Active Transport
Movement of materials from an area of low concentration to an area of high concentration
Requires energy
Energy comes from ATP (molecule that stores energy)

36. High A B
Low
A - diffusion
B - active transport

37. Why is the contractile vacuole not needed in salt water?

38. Which direction (to the inside or to the outside) would molecule move by diffusion?

39. Which direction would molecule move by active transport?
ATP

42. The Sodium Potassium Pump
ATP ADP + P

43. protein
water K+

44. In NYS lab, what would the red dots represent?
What is
the
name of
this process?
Artificial cell
diffusion
Pore
In NYS lab, what would the red dots represent?
Beaker
glucose

45. Large molecules/substances require energy in order for cell to move it across the membrane = ACTIVE transport.

51. phagocytosis http://www.youtube.com/watch?v=fpOxgAU5fFQ

54. Pinocytosis

55. Phagocytosis: moving solids into the cell through the cell membrane
Active Transport
Phagocytosis: moving solids into the cell through the cell membrane
(reaching out)
Pinocytosis: moving liquids in and out of the cell membrane
(pinching in)

56. Which process?
Phagocytosis

57. Which process?
Pinocytosis
Phagocytosis

58. 2 Types of Active Transport
1) Endocytosis = moving things into cell
2) Exocytosis = moving things out of cell

61. Endocytosis: cell membrane hugs a substance, forms a sac, and pulls in the substance.
Exocytosis: cell forms a sac around substance, the sac moves to the membrane and “spits out” substance.

62. (neither passive or active transport)
cyclosis
The circulation of cytoplasm within certain cells and one-celled organisms.
(neither passive or active transport)

63. neither passive or active transport occurs inside the cell
cyclosis
neither passive or active transport
occurs inside the cell
does not involve the cell membrane

66. Blue
Blue
Orange/Red
Amber
Amber
Blue/Purple

69. 1 2 3

70. Cytoplasm
Cell Wall
Cell Membrane
Cytoplasm
Cell Wall
Cell Membrane

72. In NYS lab, what would the red dots represent?
Artificial cell
glucose
Pore
What is
the
name of
this process?
Beaker
diffusion

73. A process that would result in the
movement of these molecules out of the
cell requires the use of
1. diffusion
2. energy
3. osmosis
4. cyclosis

74. 1. What solution were these cells placed in?
1. Salt solution
2. What process is represented by the arrow?
2. Osmosis
3. What solution could be used to reverse
this process?
3. Distilled Water

75. The change in the appearance off the cell resulted from more…
1. water flowing into the cell than flowing out of the cell
2. water flowing out of the cell than flowing into the cell
3. salt flowing into the cell than flowing out of the cell
4. salt flowing out of the cell than flowing into the cell

76. B
90 % water
Active transport A
osmosis
100 % water

77. Which cell is using energy for the process shown above?
Cell A
What is the name of this process?
Active Transport

81. Facilitated Diffusion
Sodium potassium pump

82. Orange/Red Blue Blue Blue/ Purple Amber Amber Indicator
Distilled Water
Starch
Glucose
Blue-colored Glucose Indicator Solution
Amber-colored Starch Indicator Solution
Orange/Red
Blue
Blue
Blue/
Purple
Amber
Amber

85. http://www. stolaf. edu/people/giannini/flashanimat/transport/atpase

86. http://www. brookscole